Sorry if somebody has arleady written about that. I couldn' t find any post about my problem.

Has anybody ever had "media problem" in reason ?
When I try to open my project which I was doing few days ago the following error appears:

"Media Problem
The operation couldn' t be completed because of a media related problem."

After that when I click OK it dosen' t open my project.

I do also have same problem when I try to open some of the samples.

Thank You in advance 4 any help