YouTube redirects to HTTPS anyway, so my previous attempt to fix 10.4 is bad. I also added a log of the error for loading.

Classes/YouView/MGMVideoFinder.m

@@ -463,11 +463,7 @@ NSString * const MGMVT3D = @"3D";
 		[theAlert runModal];
 	} else {
 		NSMutableDictionary *info = [NSMutableDictionary dictionary];
-        if (![[MGMSystemInfo info] isAfterSnowLeopard]) {
-            [info setObject:[NSURL URLWithString:[[[video objectForKey:MGMULURL] absoluteString] replace:@"https://" with:@"http://"]] forKey:MGMVLVideoURLKey];
-        } else {
-            [info setObject:[video objectForKey:MGMULURL] forKey:MGMVLVideoURLKey];
-        }
+        [info setObject:[video objectForKey:MGMULURL] forKey:MGMVLVideoURLKey];
         
 		if (![[[videoQualities objectForKey:[video objectForKey:MGMULTag]] objectForKey:MGMVTAudio] boolValue]) {
             [info setObject:[audio objectForKey:MGMULURL] forKey:MGMVLAudioURLKey];

Classes/YouView/Player/MGMPlayer.m

@@ -614,6 +614,12 @@ NSString * const MGMILPath = @"path";
 
 - (void)updateControls {
 	if ([[moviePlayer movie] loadState]==-1L) {
+		NSError *error = [[moviePlayer movie] attributeForKey:@"QTMovieLoadStateErrorAttribute"];
+		if (error!=nil) {
+			NSLog(@"%@", error);
+		} else {
+			NSLog(@"No error output for this OS.");
+		}
 		[moviePlayer setMovie:nil];
 		if (updateControlsTimer!=nil) {
 			[updateControlsTimer invalidate];