Movie Maker Opens but stops working and closes automatically

1. I have created a sizable movie in movie maker and everything appeared to be working correctly.
2. I started getting an error stating that some of the files had been moved or changed and must be deleted from the movie. I did find some imported that seemed to be missing, but Movie Maker would ot let me delete them. Everytime I tried, a message popped up stating that there was some kind of error and the program was ended. It also had 2 buttons “Report Problem” and “Do not Report” (not exact wording).
3. Now when I open Movie Maker, I just get the Report/ Don’t Report buttons.

I thought about reloading Movie Maker over the top of the old one, but thought I would ask first.

Any ideas? HELP!!!!!