diff --git a/include/c++/schemas/Error.h b/include/c++/schemas/Error.h
index 69eb4057..b12862a0 100644
--- a/include/c++/schemas/Error.h
+++ b/include/c++/schemas/Error.h
@@ -12,6 +12,7 @@ class Error
 {
 public:
   u32 code;
+  u32 error_ref;
   std::string message;
   std::vector<std::string> errors;
 
diff --git a/include/c/ModioC.h b/include/c/ModioC.h
index c3d51345..21db107a 100644
--- a/include/c/ModioC.h
+++ b/include/c/ModioC.h
@@ -52,6 +52,7 @@ typedef int i32;
 #define MODIO_EVENT_USER_TEAM_LEAVE   6
 #define MODIO_EVENT_USER_SUBSCRIBE    7
 #define MODIO_EVENT_USER_UNSUBSCRIBE  8
+#define MODIO_EVENT_MOD_DELETED       9
 
 // Presentation Option Constants
 #define MODIO_GRID_VIEW   0
@@ -266,7 +267,7 @@ extern "C"
     char* thumb_640x360;
     char* thumb_1280x720;
   };
-  
+
   struct ModioIcon
   {
     char* filename;
@@ -304,6 +305,7 @@ extern "C"
   struct ModioError
   {
     u32 code;
+    u32 error_ref;
     char* message;
     char** errors_array;
     u32 errors_array_size;
@@ -469,7 +471,7 @@ extern "C"
 	  char* path;
 	  ModioMod mod;
   };
-  
+
   struct ModioQueuedModDownload
   {
     u32 state;
@@ -689,8 +691,8 @@ extern "C"
   void MODIO_DLL modioCancelModDownload(u32 mod_id);
   void MODIO_DLL modioResumeDownloads(void);
   void MODIO_DLL modioPrioritizeModDownload(u32 mod_id);
-  void MODIO_DLL modioSetDownloadListener(void (*callback)(u32 response_code, u32 mod_id));  
-  void MODIO_DLL modioSetUploadListener(void (*callback)(u32 response_code, u32 mod_id));  
+  void MODIO_DLL modioSetDownloadListener(void (*callback)(u32 response_code, u32 mod_id));
+  void MODIO_DLL modioSetUploadListener(void (*callback)(u32 response_code, u32 mod_id));
   u32 MODIO_DLL modioGetModDownloadQueueCount(void);
   void MODIO_DLL modioGetModDownloadQueue(ModioQueuedModDownload* download_queue);
   u32 MODIO_DLL modioGetModfileUploadQueueCount(void);
@@ -712,7 +714,7 @@ extern "C"
   //Comment Methods
   void MODIO_DLL modioGetAllModComments(void* object, u32 mod_id, ModioFilterCreator filter, void (*callback)(void* object, ModioResponse response, ModioComment comments[], u32 comments_size));
   void MODIO_DLL modioGetAllModCommentsFilterString(void* object, u32 mod_id, char const* filter_string, u32 cache_max_age_seconds, void (*callback)(void* object, ModioResponse response, ModioComment comments[], u32 comments_size));
-  void MODIO_DLL modioGetModComment(void* object, u32 mod_id, u32 comment_id, void (*callback)(void* object, ModioResponse response, ModioComment comment));  
+  void MODIO_DLL modioGetModComment(void* object, u32 mod_id, u32 comment_id, void (*callback)(void* object, ModioResponse response, ModioComment comment));
   void MODIO_DLL modioDeleteModComment(void* object, u32 mod_id, u32 comment_id, void(*callback)(void* object, ModioResponse response));
 
   //Reports Methods
@@ -728,7 +730,7 @@ extern "C"
   void MODIO_DLL modioFreeQueuedModDownload(ModioQueuedModDownload* queued_mod_download);
   void MODIO_DLL modioFreeQueuedModfileUpload(ModioQueuedModfileUpload* queued_modfile_upload);
 
-  // General Utility Methods 
+  // General Utility Methods
   void MODIO_DLL compressFiles(char const* root_directory, char const* const filenames[], u32 filenames_size, char const* zip_path);
   void MODIO_DLL extractFiles(char const* zip_path, char const* directory_path);
   void MODIO_DLL windowsUTF8ToAnsi(const char* UTF8_string, char* ansi_string);
diff --git a/include/c/methods/callbacks/MeCallbacks.h b/include/c/methods/callbacks/MeCallbacks.h
index 2eb80b44..631f7e5f 100644
--- a/include/c/methods/callbacks/MeCallbacks.h
+++ b/include/c/methods/callbacks/MeCallbacks.h
@@ -18,10 +18,10 @@ struct GetAuthenticatedUserParams
 
 struct GetUserSubscriptionsParams
 {
-  void* object;
   std::string url;
   bool is_cache;
-  void (*callback)(void* object, ModioResponse response, ModioMod mods[], u32 mods_size);
+  std::vector<void*> objects;
+  std::vector<void(*)(void* object, ModioResponse response, ModioMod mods[], u32 mods_size)> callbacks;
 };
 
 struct GetUserEventsParams
diff --git a/include/wrappers/CurlWrapper.h b/include/wrappers/CurlWrapper.h
index 48c543b3..ce987201 100644
--- a/include/wrappers/CurlWrapper.h
+++ b/include/wrappers/CurlWrapper.h
@@ -41,7 +41,7 @@ void downloadMod(QueuedModDownload *queued_mod_download);
 void queueModDownload(ModioMod& modio_mod);
 void uploadModfile(QueuedModfileUpload *queued_modfile_upload);
 void queueModfileUpload(u32 mod_id, ModioModfileCreator *modio_modfile_creator);
-void removeDownloadedModfile(u32 mod_id);
+void removeDownloadedMod(u32 mod_id);
 
 }
 }
diff --git a/src/ModioUtility.cpp b/src/ModioUtility.cpp
index c21e2d87..768454f4 100644
--- a/src/ModioUtility.cpp
+++ b/src/ModioUtility.cpp
@@ -67,7 +67,7 @@ void onUpdateCurrentUserSubscriptions(void* object, ModioResponse response, Modi
 {
   if(response.result_offset == 0) /* Clear only if is first result page */
     modio::current_user_subscriptions.clear();
-  
+
   if (response.code >= 200 && response.code < 300)
   {
     modio::writeLogLine("Current user subscriptions retrieved sucessfully.", MODIO_DEBUGLEVEL_LOG);
@@ -176,7 +176,7 @@ void handleUnsubscription(u32 mod_id)
 {
   modioUninstallMod(mod_id);
   modioCancelModDownload(mod_id);
-  modio::curlwrapper::removeDownloadedModfile(mod_id);
+  modio::curlwrapper::removeDownloadedMod(mod_id);
 }
 
 void updateModsCache(std::vector<u32> mod_ids)
@@ -185,7 +185,7 @@ void updateModsCache(std::vector<u32> mod_ids)
   modioInitFilter(&filter);
 
   std::vector<int>* ptr_mod_ids = new std::vector<int>();
-  
+
   for (auto &mod_id : mod_ids)
   {
     modioAddFilterInField(&filter, "id", modio::toString(mod_id).c_str());
@@ -205,9 +205,9 @@ void addModsToDownloadQueue(std::vector<u32> mod_ids)
   }
   ModioFilterCreator filter;
   modioInitFilter(&filter);
-  
+
   std::vector<int>* ptr_mod_ids = new std::vector<int>();
-  
+
   for (auto &mod_id : mod_ids)
   {
     modioAddFilterInField(&filter, "id", modio::toString(mod_id).c_str());
@@ -227,6 +227,7 @@ static void onGetAllEventsPoll(void *object, ModioResponse response, ModioModEve
 
     std::vector<u32> mod_edited_ids;
     std::vector<u32> mod_to_download_queue_ids;
+    std::vector<u32> mod_deleted_ids;
     if(events_array_size > 0)
       modio::clearCache();
     for (size_t i = 0; i < events_array_size; i++)
@@ -236,7 +237,7 @@ static void onGetAllEventsPoll(void *object, ModioResponse response, ModioModEve
         modio::writeLogLine("Mod event id polled: " + modio::toString(events_array[i].id), MODIO_DEBUGLEVEL_LOG);
         modio::LAST_MOD_EVENT_POLL_ID = events_array[i].id;
       }
-      
+
       switch (events_array[i].event_type)
       {
       case MODIO_EVENT_UNDEFINED:
@@ -244,62 +245,11 @@ static void onGetAllEventsPoll(void *object, ModioResponse response, ModioModEve
         break;
       case MODIO_EVENT_MODFILE_CHANGED:
       {
-        bool reinstall = true;
-        for (auto installed_mod : modio::installed_mods)
-        {
-          if (modio::hasKey(installed_mod, "mod_id") &&
-              modio::hasKey(installed_mod, "date_updated") &&
-              installed_mod["mod_id"] == events_array[i].mod_id &&
-              installed_mod["date_updated"] >= events_array[i].date_added)
-          {
-            reinstall = false;
-            modio::writeLogLine("Modfile changed event detected but you already have a newer version installed, the modfile will not be downloaded. Mod id: " + modio::toString(events_array[i].mod_id), MODIO_DEBUGLEVEL_LOG);
-          }
-        }
-
-        for (auto &downloaded_mod_json : modio::g_downloaded_mods)
-        {
-          if (modio::hasKey(downloaded_mod_json, "mod") &&
-              modio::hasKey(downloaded_mod_json["mod"], "id") &&
-              downloaded_mod_json["mod"]["id"] == events_array[i].mod_id)
-          {
-            if (modio::hasKey(downloaded_mod_json["mod"], "date_updated") &&
-                downloaded_mod_json["mod"]["date_updated"] >= events_array[i].date_added)
-            {
-              reinstall = false;
-              modio::writeLogLine("Modfile changed event detected but you already have a newer version downloaded, the modfile will not be downloaded. Mod id: " + modio::toString(events_array[i].mod_id), MODIO_DEBUGLEVEL_LOG);
-            }else
-            {
-              nlohmann::json downloaded_mods_json_temp;
-              for (auto &downloaded_mod_temp_json : modio::g_downloaded_mods)
-              {
-                if(modio::hasKey(downloaded_mod_temp_json, "mod") &&
-                    modio::hasKey(downloaded_mod_temp_json["mod"], "id") &&
-                    downloaded_mod_temp_json["mod"]["id"] != events_array[i].mod_id)
-                {
-                  downloaded_mods_json_temp.push_back(downloaded_mod_temp_json);
-                }
-              }
-              modio::g_downloaded_mods = downloaded_mods_json_temp;
-
-              if(modio::hasKey(downloaded_mod_json, "downloaded_zip_path"))
-              {
-                std::string downloaded_zip_path = downloaded_mod_json["downloaded_zip_path"];
-                modio::removeFile(downloaded_zip_path);
-              }
-              modio::writeLogLine("Modfile changed event detected and you have an older version downloaded, old modfile will be deleted. Mod id: " + modio::toString(events_array[i].mod_id), MODIO_DEBUGLEVEL_LOG);
-              break;
-            }
-          }
-        }
-
-        if (reinstall)
-        {
-          modio::writeLogLine("Modfile changed. Mod id: " + modio::toString(events_array[i].mod_id) + " Reisntalling...", MODIO_DEBUGLEVEL_LOG);
-          mod_to_download_queue_ids.push_back(events_array[i].mod_id);
-        }
+        modio::writeLogLine("Modfile changed. Mod id: " + modio::toString(events_array[i].mod_id), MODIO_DEBUGLEVEL_LOG);
+        modio::writeLogLine(" Adding to the download queue...", MODIO_DEBUGLEVEL_LOG);
+        mod_to_download_queue_ids.push_back(events_array[i].mod_id);
+        break;
       }
-      break;
       case MODIO_EVENT_MOD_AVAILABLE:
       {
         // N/A
@@ -312,15 +262,28 @@ static void onGetAllEventsPoll(void *object, ModioResponse response, ModioModEve
       }
       case MODIO_EVENT_MOD_EDITED:
       {
-        modio::writeLogLine("Mod updated. Mod id: " + modio::toString(events_array[i].mod_id) + " Updating cache...", MODIO_DEBUGLEVEL_LOG);
-        mod_edited_ids.push_back(events_array[i].mod_id);
+        modio::writeLogLine("Mod edited. Mod id: " + modio::toString(events_array[i].mod_id), MODIO_DEBUGLEVEL_LOG);
+        /* TODO: Re-enable local mod profile update? */
+        //modio::writeLogLine("Mod updated. Mod id: " + modio::toString(events_array[i].mod_id) + " Updating cache...", MODIO_DEBUGLEVEL_LOG);
+        //mod_edited_ids.push_back(events_array[i].mod_id);
         break;
       }
+      case MODIO_EVENT_MOD_DELETED:
+      {
+        modio::writeLogLine("Mod deleted. Mod id: " + modio::toString(events_array[i].mod_id) + " Uninstalling...", MODIO_DEBUGLEVEL_LOG);
+        mod_deleted_ids.push_back(events_array[i].mod_id);
+      }
       }
     }
     /* TODO: Re-enable mod profile update? */
     //if (mod_edited_ids.size() > 0)
     //  updateModsCache(mod_edited_ids);
+    size_t deleted_mod_count = mod_deleted_ids.size();
+    for (size_t i = 0; i < deleted_mod_count; ++i)
+    {
+      modioUninstallMod(mod_deleted_ids[i]);
+    }
+
     if (mod_to_download_queue_ids.size() > 0)
       addModsToDownloadQueue(mod_to_download_queue_ids);
 
@@ -550,159 +513,121 @@ void handleDownloadImageError(void *object, void (*callback)(void *object, Modio
   modioFreeResponse(&response);
 }
 
-void processGenericLocalUnauthorizedRequest(void* object, void(*callback)(void* object, ModioResponse response))
+ModioResponse createUnauthorizedResponse()
 {
   modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
-  
+
   ModioResponse response;
   nlohmann::json empty_json;
+
   modioInitResponse(&response, empty_json);
   response.code = 401;
+
+  return response;
+}
+
+void processGenericLocalUnauthorizedRequest(void* object, void(*callback)(void* object, ModioResponse response))
+{
+  ModioResponse response = createUnauthorizedResponse();
+
   callback(object, response);
+
   modioFreeResponse(&response);
 }
 
 void processLocalUnauthorizedRequestModParam(void* object, void (*callback)(void *object, ModioResponse response, ModioMod mod))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
+  ModioResponse response = createUnauthorizedResponse();
 
-  ModioResponse response;
   ModioMod mod;
   nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
   modioInitMod(&mod, empty_json);
 
   callback(object, response, mod);
-  
+
   modioFreeResponse(&response);
   modioFreeMod(&mod);
 }
 
 void processLocalUnauthorizedRequestModfileParam(void* object, void (*callback)(void *object, ModioResponse response, ModioModfile modfile))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
+  ModioResponse response = createUnauthorizedResponse();
 
-  ModioResponse response;
   ModioModfile modfile;
   nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
   modioInitModfile(&modfile, empty_json);
 
   callback(object, response, modfile);
-  
+
   modioFreeResponse(&response);
   modioFreeModfile(&modfile);
 }
 
 void processLocalUnauthorizedRequestBoolParam(void* object, void (*callback)(void *object, ModioResponse response, bool))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
-
-  ModioResponse response;
-  nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
+  ModioResponse response = createUnauthorizedResponse();
 
   callback(object, response, false);
-  
+
   modioFreeResponse(&response);
 }
 
 void processLocalUnauthorizedRequestUserParam(void* object, void (*callback)(void *object, ModioResponse response, ModioUser user))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
+  ModioResponse response = createUnauthorizedResponse();
 
-  ModioResponse response;
   ModioUser user;
   nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
   modioInitUser(&user, empty_json);
 
   callback(object, response, user);
-  
+
   modioFreeResponse(&response);
   modioFreeUser(&user);
 }
 
 void processLocalUnauthorizedRequestModsParam(void* object, void (*callback)(void *object, ModioResponse response, ModioMod mods[], u32 mods_size))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
-
-  ModioResponse response;
-  nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
+  ModioResponse response = createUnauthorizedResponse();
 
   callback(object, response, NULL, 0);
-  
+
   modioFreeResponse(&response);
 }
 
 void processLocalUnauthorizedRequestUserEventsParam(void* object, void (*callback)(void *object, ModioResponse response, ModioUserEvent* events_array, u32 events_array_size))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
-
-  ModioResponse response;
-  nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
+  ModioResponse response = createUnauthorizedResponse();
 
   callback(object, response, NULL, 0);
-  
+
   modioFreeResponse(&response);
 }
 
 void processLocalUnauthorizedRequestGamesParam(void* object, void (*callback)(void *object, ModioResponse response, ModioGame games[], u32 games_size))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
-
-  ModioResponse response;
-  nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
+  ModioResponse response = createUnauthorizedResponse();
 
   callback(object, response, NULL, 0);
-  
+
   modioFreeResponse(&response);
 }
 
 void processLocalUnauthorizedRequestModfilesParam(void* object, void (*callback)(void *object, ModioResponse response, ModioModfile modfiles[], u32 modfiles_size))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
-
-  ModioResponse response;
-  nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
+  ModioResponse response = createUnauthorizedResponse();
 
   callback(object, response, NULL, 0);
-  
+
   modioFreeResponse(&response);
 }
 
 void processLocalUnauthorizedRequestRatingsParam(void* object, void (*callback)(void *object, ModioResponse response, ModioRating ratings[], u32 ratings_size))
 {
-  modio::writeLogLine("Unauthorized local request found. 401 will be returned", MODIO_DEBUGLEVEL_LOG);
-
-  ModioResponse response;
-  nlohmann::json empty_json;
-  response.code = 401;
-
-  modioInitResponse(&response, empty_json);
+  ModioResponse response = createUnauthorizedResponse();
 
   callback(object, response, NULL, 0);
-  
+
   modioFreeResponse(&response);
 }
 
diff --git a/src/c++/schemas/Error.cpp b/src/c++/schemas/Error.cpp
index 9148a575..513e3215 100644
--- a/src/c++/schemas/Error.cpp
+++ b/src/c++/schemas/Error.cpp
@@ -7,6 +7,7 @@ namespace modio
 void Error::initialize(ModioError modio_error)
 {
   code = modio_error.code;
+  error_ref = modio_error.error_ref;
   if (modio_error.message)
     message = modio_error.message;
   errors.resize(modio_error.errors_array_size);
@@ -21,15 +22,16 @@ nlohmann::json toJson(Error &error)
   nlohmann::json error_json;
 
   error_json["code"] = error.code;
+  error_json["error_ref"] = error.error_ref;
   error_json["message"] = error.message;
 
   nlohmann::json errors_json;
-  
+
   for (u32 i = 0; i<error.errors.size(); i++)
   {
     errors_json.push_back(error.errors[i]);
   }
-  
+
   error_json["errors"] = errors_json;
 
   return error_json;
diff --git a/src/c/methods/MeMethods.cpp b/src/c/methods/MeMethods.cpp
index be59b66b..5898d8f1 100644
--- a/src/c/methods/MeMethods.cpp
+++ b/src/c/methods/MeMethods.cpp
@@ -33,16 +33,35 @@ extern "C"
 
   void modioGetUserSubscriptionsFilterString(void* object, char const* filter_string, u32 cache_max_age_seconds, void (*callback)(void* object, ModioResponse response, ModioMod mods[], u32 mods_size))
   {
+    if(!callback)
+    {
+      modio::writeLogLine("NULL callback detected", MODIO_DEBUGLEVEL_ERROR);
+      return;
+    }
+
     std::string url_without_api_key = modio::MODIO_URL + modio::MODIO_VERSION_PATH + "me/subscribed/?" + (filter_string ? filter_string : "");
     std::string url = url_without_api_key + "&api_key=" + modio::API_KEY;
 
+    for(auto get_user_subscriptions_callbacks_iterator : get_user_subscriptions_callbacks)
+    {
+      if(get_user_subscriptions_callbacks_iterator.second->url == url_without_api_key)
+      {
+        modio::writeLogLine("Avoiding paralel call...", MODIO_DEBUGLEVEL_LOG);
+        GetUserSubscriptionsParams* get_user_subscriptions_params = get_user_subscriptions_callbacks_iterator.second;
+        get_user_subscriptions_params->callbacks.push_back(callback);
+        get_user_subscriptions_params->objects.push_back(object);
+        return;
+      }
+    }
+
     u32 call_number = modio::curlwrapper::getCallNumber();
 
-    get_user_subscriptions_callbacks[call_number] = new GetUserSubscriptionsParams;
-    get_user_subscriptions_callbacks[call_number]->callback = callback;
-    get_user_subscriptions_callbacks[call_number]->object = object;
-    get_user_subscriptions_callbacks[call_number]->url = url_without_api_key;
-    get_user_subscriptions_callbacks[call_number]->is_cache = false;
+    GetUserSubscriptionsParams* new_get_user_subscriptions_params = new GetUserSubscriptionsParams;
+    get_user_subscriptions_callbacks[call_number] = new_get_user_subscriptions_params;
+    new_get_user_subscriptions_params->url = url_without_api_key;
+    new_get_user_subscriptions_params->is_cache = false;
+    new_get_user_subscriptions_params->callbacks.push_back(callback);
+    new_get_user_subscriptions_params->objects.push_back(object);
 
     std::string cache_filename = modio::getCallFileFromCache(url_without_api_key, cache_max_age_seconds);
     if(cache_filename != "")
@@ -51,13 +70,10 @@ extern "C"
       nlohmann::json cache_file_json = modio::openJson(modio::getModIODirectory() + "cache/" + cache_filename);
       if(!cache_file_json.empty())
       {
-        get_user_subscriptions_callbacks[call_number]->is_cache = true;
+        new_get_user_subscriptions_params->is_cache = true;
         modioOnGetUserSubscriptions(call_number, 200, cache_file_json);
         return;
       }
-    }else
-    {
-      modio::writeLogLine("No cache found", MODIO_DEBUGLEVEL_LOG);
     }
 
     modio::curlwrapper::get(call_number, url, modio::getHeaders(), &modioOnGetUserSubscriptions);
diff --git a/src/c/methods/ModMethods.cpp b/src/c/methods/ModMethods.cpp
index 38e57c21..a0bdac77 100644
--- a/src/c/methods/ModMethods.cpp
+++ b/src/c/methods/ModMethods.cpp
@@ -39,8 +39,6 @@ extern "C"
     std::string url_without_api_key = modio::MODIO_URL + modio::MODIO_VERSION_PATH + "games/" + modio::toString(modio::GAME_ID) + "/mods?" + (filter_string ? filter_string : "");
     std::string url = url_without_api_key + "&api_key=" + modio::API_KEY;
 
-    u32 call_number = modio::curlwrapper::getCallNumber();
-
     for(auto get_all_mods_callbacks_iterator : get_all_mods_callbacks)
     {
       if(get_all_mods_callbacks_iterator.second->url == url_without_api_key)
@@ -53,6 +51,8 @@ extern "C"
       }
     }
 
+    u32 call_number = modio::curlwrapper::getCallNumber();
+
     GetAllModsParams* new_get_all_mods_params = new GetAllModsParams;
     get_all_mods_callbacks[call_number] = new_get_all_mods_params;
     new_get_all_mods_params->url = url_without_api_key;
@@ -63,8 +63,8 @@ extern "C"
     std::string cache_filename = modio::getCallFileFromCache(url_without_api_key, cache_max_age_seconds);
     if (cache_filename != "")
     {
+      modio::writeLogLine("Cache file found: " + cache_filename, MODIO_DEBUGLEVEL_LOG);
       nlohmann::json cache_file_json = modio::openJson(modio::getModIODirectory() + "cache/" + cache_filename);
-      nlohmann::json empty_json = {};
       if (!cache_file_json.empty())
       {
         new_get_all_mods_params->is_cache = true;
diff --git a/src/c/methods/callbacks/MeCallbacks.cpp b/src/c/methods/callbacks/MeCallbacks.cpp
index 87c1d37b..74226868 100644
--- a/src/c/methods/callbacks/MeCallbacks.cpp
+++ b/src/c/methods/callbacks/MeCallbacks.cpp
@@ -42,8 +42,8 @@ void modioOnGetUserSubscriptions(u32 call_number, u32 response_code, nlohmann::j
   ModioResponse response;
   modioInitResponse(&response, response_json);
   response.code = response_code;
-  ModioMod *mods = NULL;
   u32 mods_size = 0;
+  ModioMod *mods = NULL;
 
   if (response.code == 200)
   {
@@ -64,7 +64,10 @@ void modioOnGetUserSubscriptions(u32 call_number, u32 response_code, nlohmann::j
     }
   }
 
-  get_user_subscriptions_callbacks[call_number]->callback(get_user_subscriptions_callbacks[call_number]->object, response, mods, mods_size);
+  for(int i=0; i<get_user_subscriptions_callbacks[call_number]->callbacks.size(); i++)
+  {
+    get_user_subscriptions_callbacks[call_number]->callbacks[i](get_user_subscriptions_callbacks[call_number]->objects[i], response, mods, mods_size);
+  }
 
   delete get_user_subscriptions_callbacks[call_number];
   get_user_subscriptions_callbacks.erase(call_number);
diff --git a/src/c/schemas/ModioError.cpp b/src/c/schemas/ModioError.cpp
index c46014bd..7235e7d7 100644
--- a/src/c/schemas/ModioError.cpp
+++ b/src/c/schemas/ModioError.cpp
@@ -10,6 +10,10 @@ extern "C"
     if(modio::hasKey(error_json, "code"))
       error->code = error_json["code"];
 
+    error->error_ref = 0;
+    if(modio::hasKey(error_json, "error_ref"))
+      error->error_ref = error_json["error_ref"];
+
     error->message = NULL;
     if(modio::hasKey(error_json, "message"))
     {
@@ -44,6 +48,7 @@ extern "C"
   void modioInitErrorCpp(ModioError* modio_error, modio::Error* error)
   {
     modio_error->code = error->code;
+    modio_error->error_ref = error->error_ref;
 
     modio_error->message = new char[error->message.size() + 1];
     strcpy(modio_error->message, error->message.c_str());
diff --git a/src/c/schemas/ModioModEvent.cpp b/src/c/schemas/ModioModEvent.cpp
index 704e9b82..4f063ddf 100644
--- a/src/c/schemas/ModioModEvent.cpp
+++ b/src/c/schemas/ModioModEvent.cpp
@@ -29,6 +29,8 @@ extern "C"
         event->event_type = MODIO_EVENT_MOD_UNAVAILABLE;
       else if(event_json["event_type"] == "MOD_EDITED")
         event->event_type = MODIO_EVENT_MOD_EDITED;
+      else if(event_json["event_type"] == "MOD_DELETED")
+        event->event_type = MODIO_EVENT_MOD_DELETED;
       else if(event_json["event_type"] == "USER_TEAM_JOIN")
         event->event_type = MODIO_EVENT_USER_TEAM_JOIN;
       else if(event_json["event_type"] == "USER_TEAM_LEAVE")
diff --git a/src/c/schemas/ModioUserEvent.cpp b/src/c/schemas/ModioUserEvent.cpp
index 3e48c219..48e4c606 100644
--- a/src/c/schemas/ModioUserEvent.cpp
+++ b/src/c/schemas/ModioUserEvent.cpp
@@ -33,6 +33,8 @@ extern "C"
         event->event_type = MODIO_EVENT_MOD_UNAVAILABLE;
       else if(event_json["event_type"] == "MOD_EDITED")
         event->event_type = MODIO_EVENT_MOD_EDITED;
+      else if(event_json["event_type"] == "MOD_DELETED")
+        event->event_type = MODIO_EVENT_MOD_DELETED;
       else if(event_json["event_type"] == "USER_TEAM_JOIN")
         event->event_type = MODIO_EVENT_USER_TEAM_JOIN;
       else if(event_json["event_type"] == "USER_TEAM_LEAVE")
diff --git a/src/wrappers/CurlWrapper.cpp b/src/wrappers/CurlWrapper.cpp
index 7f34b593..2dcab32d 100644
--- a/src/wrappers/CurlWrapper.cpp
+++ b/src/wrappers/CurlWrapper.cpp
@@ -533,8 +533,31 @@ void downloadMod(QueuedModDownload *queued_mod_download)
   get(call_number, url, modio::getHeaders(), &onGetDownloadMod);
 }
 
-void removeDownloadedModfile(nlohmann::json downloaded_mod)
+nlohmann::json getDownloadedModJson(u32 mod_id)
+{
+  for (auto &downloaded_mod_json : modio::g_downloaded_mods)
+  {
+    if (modio::hasKey(downloaded_mod_json, "mod") &&
+        modio::hasKey(downloaded_mod_json["mod"], "id") &&
+        downloaded_mod_json["mod"]["id"] == mod_id)
+    {
+      return downloaded_mod_json;
+    }
+  }
+  nlohmann::json empty_json;
+  return empty_json;
+}
+
+void removeDownloadedMod(u32 mod_id)
 {
+  modio::writeLogLine("Removing mod: " + mod_id, MODIO_DEBUGLEVEL_ERROR);
+  nlohmann::json downloaded_mod = getDownloadedModJson(mod_id);
+  if(!downloaded_mod.empty())
+  {
+    modio::writeLogLine("Could not remove modfile. Empty downloaded mod json object.", MODIO_DEBUGLEVEL_ERROR);
+    return;
+  }
+
   if(!modio::hasKey(downloaded_mod, "downloaded_zip_path"))
   {
     modio::writeLogLine("Could not find the downloaded_zip_path attribute on to the mod download json.", MODIO_DEBUGLEVEL_ERROR);
@@ -593,21 +616,6 @@ void cancelModDownload(QueuedModDownload* queued_mod_download)
   writeLogLine("Finished cancel preprocess.", MODIO_DEBUGLEVEL_WARNING);
 }
 
-nlohmann::json getDownloadedModJson(u32 mod_id)
-{
-  for (auto &downloaded_mod_json : modio::g_downloaded_mods)
-  {
-    if (modio::hasKey(downloaded_mod_json, "mod") &&
-        modio::hasKey(downloaded_mod_json["mod"], "id") &&
-        downloaded_mod_json["mod"]["id"] == mod_id)
-    {
-      return downloaded_mod_json;
-    }
-  }
-  nlohmann::json empty_json;
-  return empty_json;
-}
-
 QueuedModDownload* getQueuedModJson(u32 mod_id)
 {
   for (auto &queued_mod_download : g_mod_download_queue)
@@ -620,86 +628,73 @@ QueuedModDownload* getQueuedModJson(u32 mod_id)
   return NULL;
 }
 
-bool isDownloadedModfileUpdated(nlohmann::json downloaded_mod, u32 new_modfile_date)
+bool isModDownloaded(u32 mod_id, u32 new_modfile_id)
 {
-  if (modio::hasKey(downloaded_mod, "mod") &&
-      modio::hasKey(downloaded_mod["mod"], "modfile") &&
-      modio::hasKey(downloaded_mod["mod"]["modfile"], "date_added") &&
-      downloaded_mod["mod"]["date_added"] >= new_modfile_date)
+  modio::writeLogLine("Checking if mod is downloaded...", MODIO_DEBUGLEVEL_LOG);
+  nlohmann::json downloaded_mod = getDownloadedModJson(mod_id);
+  if(!downloaded_mod.empty())
   {
-    modio::writeLogLine("Downloaded mod is updated " + modio::toString(new_modfile_date), MODIO_DEBUGLEVEL_LOG);
-    return true;
+    if (modio::hasKey(downloaded_mod, "mod") &&
+        modio::hasKey(downloaded_mod["mod"], "modfile") &&
+        modio::hasKey(downloaded_mod["mod"]["modfile"], "id") &&
+        downloaded_mod["mod"]["modfile"]["id"] == new_modfile_id)
+    {
+      modio::writeLogLine("Mod is already downloaded.", MODIO_DEBUGLEVEL_LOG);
+      return true;
+    }
+    removeDownloadedMod(downloaded_mod);
   }
-  modio::writeLogLine("Downloaded mod is not updated " + modio::toString(new_modfile_date), MODIO_DEBUGLEVEL_LOG);
+  modio::writeLogLine("Mod is not downloaded.", MODIO_DEBUGLEVEL_LOG);
   return false;
 }
 
-bool isInstalledModfileUpdated(u32 mod_id, u32 date_updated)
+bool isModInstalled(u32 mod_id, u32 modfile_id)
 {
+  modio::writeLogLine("Checking if mod is installed...", MODIO_DEBUGLEVEL_LOG);
   for (auto installed_mod : modio::installed_mods)
   {
     if (modio::hasKey(installed_mod, "mod_id") &&
-        modio::hasKey(installed_mod, "date_updated") &&
+        modio::hasKey(installed_mod, "modfile_id") &&
         installed_mod["mod_id"] == mod_id &&
-        installed_mod["date_updated"] >= date_updated)
+        installed_mod["modfile_id"] == modfile_id)
     {
-      u32 installed_mod_updated_at = installed_mod["date_updated"];
-      writeLogLine(std::string("Installed mod found: " + modio::toString(installed_mod_updated_at)), MODIO_DEBUGLEVEL_LOG);
-      modio::writeLogLine("Modfile changed event detected but you already have a newer version installed, the modfile will not be downloaded. Mod id: " + modio::toString(mod_id), MODIO_DEBUGLEVEL_LOG);
+      u32 modfile_id = installed_mod["modfile_id"];
+      modio::writeLogLine("Mod is already installed.", MODIO_DEBUGLEVEL_LOG);
       return true;
     }
   }
+  modio::writeLogLine("Mod is not installed.", MODIO_DEBUGLEVEL_LOG);
   return false;
 }
 
-void removeDownloadedModfile(u32 mod_id)
-{
-  nlohmann::json downloaded_mod = getDownloadedModJson(mod_id);
-  if(!downloaded_mod.empty())
-  {
-    removeDownloadedModfile(downloaded_mod);
-  }
-}
-
-bool modEnqueuePreprocess(u32 mod_id, u32 modfile_date_added)
+bool isModQueued(u32 mod_id, u32 modfile_id)
 {
-  nlohmann::json downloaded_mod = getDownloadedModJson(mod_id);
-  if(!downloaded_mod.empty())
-  {
-    writeLogLine(std::string("Downloaded mod found: "), MODIO_DEBUGLEVEL_LOG);
-    writeLogLine(downloaded_mod, MODIO_DEBUGLEVEL_LOG);
-    if(isDownloadedModfileUpdated(downloaded_mod, modfile_date_added))
-      return false;
-    else
-      removeDownloadedModfile(downloaded_mod);
-  }
-
-  if(isInstalledModfileUpdated(mod_id, modfile_date_added))
-  {
-    writeLogLine("Did not add the mod: " + toString(mod_id) + " to the mod download queue. It's already installed in a more recent version.", MODIO_DEBUGLEVEL_WARNING);
-    return false;
-  }
-
+  modio::writeLogLine("Checking if mod is on the download queue...", MODIO_DEBUGLEVEL_LOG);
   QueuedModDownload* queued_mod_download = getQueuedModJson(mod_id);
   if(queued_mod_download)
   {
-    if(queued_mod_download->mod.modfile.date_added >= modfile_date_added)
+    if(queued_mod_download->mod.modfile.id == modfile_id)
     {
-      writeLogLine("Did not add the mod: " + toString(mod_id) + " to the mod download queue. It's already on the download queue in a more recent version.", MODIO_DEBUGLEVEL_WARNING);
-      return false;
+      modio::writeLogLine("Mod is already on the download queue.", MODIO_DEBUGLEVEL_LOG);
+      return true;
     }else
     {
       cancelModDownload(queued_mod_download);
     }
   }
-  return true;
+  modio::writeLogLine("Mod is not on the download queue.", MODIO_DEBUGLEVEL_LOG);
+  return false;
 }
 
 void queueModDownload(ModioMod &modio_mod)
 {
   writeLogLine("Adding to download queue mod: " + toString(modio_mod.id), MODIO_DEBUGLEVEL_LOG);
-  if(!modEnqueuePreprocess(modio_mod.id, modio_mod.modfile.date_added))
+
+  if(isModDownloaded(modio_mod.id, modio_mod.modfile.id)
+      || isModInstalled(modio_mod.id, modio_mod.modfile.id)
+      || isModQueued(modio_mod.id, modio_mod.modfile.id))
   {
+    writeLogLine("Mod is up to date, the mod won't be queued.", MODIO_DEBUGLEVEL_LOG);
     return;
   }
 
@@ -717,7 +712,7 @@ void queueModDownload(ModioMod &modio_mod)
 
   updateModDownloadQueueFile();
 
-  writeLogLine("Download queued. Mod id: " + toString(modio_mod.id), MODIO_DEBUGLEVEL_LOG);
+  writeLogLine("Download queued.", MODIO_DEBUGLEVEL_LOG);
 
   if (g_mod_download_queue.size() == 1)
   {