[NODookie]

Whenever I try to play the movie I'm working on from the beginning it automatically freezes and iMOVIE also freezes when I try doing other things like deleting a clip. By the way the project I'm working on is very large and I don't know if that has something to do with it. I used to think it was a memory problem of some kind so I added more RAM and I'm still having the same problems. Can anyone help me?

[Big Mac]

Unfortunately, iMovie is pretty disgusting on OS 9. It's not at all stable on any OS 9 box I've used. Your best option by far is to upgrade to OS X, since, in contrast, I've never had iMovie unexpectedly quit on me when using it on OS X; of course you'll never have to worry about it crashing the system, either - this is OS X we're talking about.