diff --git a/OSCRouter/EosPlatform_Mac_Native.mm b/OSCRouter/EosPlatform_Mac_Native.mm
index 10e32a7..7956e92 100644
--- a/OSCRouter/EosPlatform_Mac_Native.mm
+++ b/OSCRouter/EosPlatform_Mac_Native.mm
@@ -67,14 +67,17 @@ + (id)BeginActivity:(const std::string&)reason error:(std::string&)error
 	NSProcessInfo *processInfo = [NSProcessInfo processInfo];
 	if(processInfo != nil)
 	{
-		const char *reasonStr = ((reason.empty() || reason.c_str()==0)
-			? "routing started"
-			: reason.c_str());
-		activity = [processInfo beginActivityWithOptions:NSActivityUserInitiated|NSActivityLatencyCritical reason:[NSString stringWithUTF8String:reasonStr]];
-		if(activity == nil)
-			error = "beginActivityWithOptions failed";
-		else
-			[activity retain];
+		if([processInfo respondsToSelector:@selector(beginActivityWithOptions:reason:)] == YES)
+		{
+			const char *reasonStr = ((reason.empty() || reason.c_str()==0)
+				? "routing started"
+				: reason.c_str());
+			activity = [processInfo beginActivityWithOptions:NSActivityUserInitiated|NSActivityLatencyCritical reason:[NSString stringWithUTF8String:reasonStr]];
+			if(activity == nil)
+				error = "beginActivityWithOptions failed";
+			else
+				[activity retain];
+		}
 	}
 	else
 		error = "could not get current process";
@@ -95,7 +98,10 @@ + (void)EndActivity:(id)activity
 	{
 		NSProcessInfo *processInfo = [NSProcessInfo processInfo];
 		if(processInfo != nil)
-			[processInfo endActivity:activity];
+		{
+			if([processInfo respondsToSelector:@selector(endActivity:)] == YES)
+				[processInfo endActivity:activity];
+		}
 		
 		[activity release];
 	}
diff --git a/OSCRouter/MainWindow.cpp b/OSCRouter/MainWindow.cpp
index e1f4ff1..3966a17 100644
--- a/OSCRouter/MainWindow.cpp
+++ b/OSCRouter/MainWindow.cpp
@@ -33,7 +33,7 @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
-#define APP_VERSION					"0.5"
+#define APP_VERSION					"0.6"
 #define SETTING_LOG_DEPTH			"LogDepth"
 #define SETTING_FILE_DEPTH			"FileDepth"
 #define SETTING_LAST_FILE			"LastFile"