Movie Texture End - Load Level Concern?

Hi, I'm having a problem with loading a level after movie texture ends. The movie texture is an intro to the game The movie texture ending and level loading works fine, but when the level loads (the main menu 'level') it comes up with a bunch of these errors too.

 ArgumentException: GetLocalizedString can only be called from the main thread.
 Constructors and field initializers will be executed from the loading thread when loading a scene.
 Don't use this function in the constructor or field initializers, instead move initialization code to the Awake or Start function.
 TreeEditor.TreeGroupLeaf..cctor ()
 Rethrow as TypeInitializationException: An exception was thrown by the type initializer for TreeEditor.TreeGroupLeaf

And several others related to trees. Will this effect the rest of my game if I ignore it? If it will, what do I have to do to stop the errors? There isn't a problem so far with the game but I'd like the errors to be fixed. I heard that this could be fixed by replacing the trees, is this the only solution + is there certain trees that cause errors?

Thanks