I am currently experiencing the same problem.

I"ve been editing a project for the past 2 weeks with AVI files (Sony DV camera footage) and MP4 files (GoPro camera footage). The MP4 files were causing my project to crash so I converted them to AVI files.

This seemed to work alright for awhile but today my project crashes on opening, which means I've lost all my work!!!

When the project opens it's looking for 1 x MP4 file; I've tried skipping the file search and selecting the original but it always crashes.

Is there anyway to repair the project? Or remove the this MP4 file from the project memory?