I have been working on a project for months with no problems. Yesterday I rendered a rough movie version for review. It turned out fine, but today when I reopened the project to add some clips, I got an error message for every mp4 file associated with the project stating "The file that belongs to the movie could not be found". All video and photos are still in the working project, but all associated audio clips are gone. In some cases I had separated the audio from the video, but in others - such as a narration added later, it was a separate file. In both cases - they are gone. I have video of people talking and no sound. All audio has been stripped from the actual MVP project. When I look at the files in my computer and in the project downloads, all files that the program can't find are literally right there, but the program can't see them. I am not done with this project and need to add more clips to finalize. I can't imagine having to do all this work over again! Any help out there for this problem? THANKS.