diff --git a/demo/views/track-verified.hbs b/demo/views/track-verified.hbs
index 25bb53ec..e59bbcfb 100644
--- a/demo/views/track-verified.hbs
+++ b/demo/views/track-verified.hbs
@@ -100,6 +100,12 @@
         console.log(user);
         console.log(events);
 
+        if (!location) {
+          $('#map').hide();
+          $('#response-details').hide();
+          return;
+        }
+
         $('#map').show();
         if (!map) {
           map = Radar.ui.map({
diff --git a/package-lock.json b/package-lock.json
index ae31ac4f..c2a469db 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "radar-sdk-js",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "radar-sdk-js",
-      "version": "4.1.5-beta.0",
+      "version": "4.1.8",
       "license": "ISC",
       "dependencies": {
         "@types/geojson": "^7946.0.10"
diff --git a/package.json b/package.json
index fa999832..9867dbd9 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "radar-sdk-js",
-  "version": "4.1.7",
+  "version": "4.1.8",
   "description": "Web Javascript SDK for Radar, location infrastructure for mobile and web apps.",
   "homepage": "https://radar.com",
   "type": "module",
diff --git a/src/api/verify.ts b/src/api/verify.ts
index 2096f8ad..34ff6bee 100644
--- a/src/api/verify.ts
+++ b/src/api/verify.ts
@@ -43,11 +43,14 @@ class VerifyAPI {
       encrypted,
     };
 
+    let userAgent = navigator.userAgent;
+    const windows = userAgent && userAgent.toLowerCase().includes('windows');
+
     const response: any = await Http.request({
       method: 'GET',
       path: 'verify',
       data: body,
-      host: 'https://radar-verify.com:52516',
+      host: windows ? 'http://localhost:52516' : 'https://radar-verify.com:52516',
     });
 
     const { user, events, token } = response;
diff --git a/src/errors.ts b/src/errors.ts
index a627f53d..878db152 100644
--- a/src/errors.ts
+++ b/src/errors.ts
@@ -3,7 +3,7 @@ class RadarError extends Error {
 
   constructor(message: string) {
     super(message);
-    this.status = ''; // to be overridden (support for leagcy status)
+    this.status = ''; // to be overridden (support for legacy status)
   }
 }
 
diff --git a/src/http.ts b/src/http.ts
index 35b20a80..2848a271 100644
--- a/src/http.ts
+++ b/src/http.ts
@@ -6,6 +6,8 @@ import {
   RadarBadRequestError,
   RadarDesktopAppError,
   RadarForbiddenError,
+  RadarLocationError,
+  RadarLocationPermissionsError,
   RadarNotFoundError,
   RadarPaymentRequiredError,
   RadarPublishableKeyError,
@@ -96,6 +98,15 @@ class Http {
           return reject(new RadarServerError(response));
         }
 
+        const error = response?.meta?.error;
+        if (error === 'ERROR_PERMISSIONS') {
+          return reject(new RadarLocationPermissionsError('Location permissions not granted.'));
+        } else if (error === 'ERROR_LOCATION') {
+          return reject(new RadarLocationError('Could not determine location.'));
+        } else if (error === 'ERROR_NETWORK') {
+          return reject(new RadarTimeoutError());
+        }
+
         if (xhr.status == 200) {
           return resolve(response);
         }
diff --git a/src/version.ts b/src/version.ts
index 478dd8b8..ce743592 100644
--- a/src/version.ts
+++ b/src/version.ts
@@ -1 +1 @@
-export default '4.1.7';
+export default '4.1.8';