I need help with Movie Maker.

I have had Movie maker for several years, and have successfully burned DVD's. I was recently working on old family photos, save the project before exiting each time and on several different times.  I was always able to return to my file and continue. However, now when I open the file I get all the captions I had put in, but no pictures. In place of my pictures, I have a yellow ! When I right click on the picture it ask me if I want to fix the picture and to double click. when I do that It still does not give me back the picture that was in that spot.  Can anyone tell me what when wrong and how I can fix it without starting all over again. Any help from anyone will be greatly appreciated. Thank You.