I recently switched my YouTube username. When I tried to upload a video from Movie Studio HD Platinum 11, it told me the server didn't know my user name. So I went into YouTube and switched my username back to what it was before. It still wasn't knowing it. So I restarted my laptop and tried again. Nothing. So next I tried changing my password and you know what it said. I'm not sure what to do. If anyone knows someone who knows anything about this, or can offer a tip, please refer me to them.