Hi, I'm having a problem with my iMovie HD Version 6.0.03

I have an Mac OS X Version 10.4.11

I had previously edited material in an iMovie project and opened it to edit more. While the project was opened, I moved the iMovie file to a new folder. I then had problems saving it because it said it couldn't find the source. So I moved the project back to its original location and saved it.

Now, the footage plays black and I don't know what to do. Thanks for the help.

UPDATE: I exported a piece of the "black" footage and it was fine on playback in Quicktime. I just don't know why it's black in the iMovie window.