Hi everyone, 

I was editing a video in windows movie maker and saved it every 2 Minutes just to make sure. Then before closing the project I saved it again. 

Then when I wanted to open the project file again to keep on working on it Movie Maker gave me the error message "Sorry, Movie maker can´t open this project file. The file might not be compatible with Movie Maker or be corrupted." 

Is there any way that I don´t have to start all over again with my editing? It took me 3 hours already.

Thanks for your help!