I've been editing with Vegas Movie Studio 9 Platinum for about a year and a half and I've never had problems until now.

Just the other day, I opened up my Vegas and my all of my edited videos had set the media offline! I tried opening new ones, re-downloading the movies and nothing. I haven't tried to re-download Vegas because I'm afraid I'll lose all my progress...
Can someone help me? I'm very lost...

It is very appreciated. Thank you!!!