So I was working on a project last night on sony vegas pro 8. All going well and then I stopped, saved the project and turned the computer off (all the normal way). But this afternoon when I opened the project it said that it could not locate the video files. But the files are still where they were before. When I try to replace the files with themselves nothing seems to happen. It seems to be loading but it takes forever. The files are there so why is it saying that they are missing???