Help with an app not opening in 1 acct

[Pure Process]

I am new to forum. I am running OS 10.4 Tiger. I have ad odd issue that has arisen. All of a sudden when I try to open IMOVIE on my main user acct, it locks up. I have another user acct and it works fine. I have tried repairing permissions, etc and still a no go. I have searched all over but I know I am missing something. TIA for any help someone can offer.

 

[JediMeister]

What version of iMovie? HD 6? 7? Depending on which version, it could be the last project you were editing, or there may be some imported footage preventing the application from working. With iMovie 6, pull the .plist file from your user folder's Library/Preferences folder, and the Caches folder, also found in Library. for iMovie 6, you may have to go a bit further, pulling the two folders in Movies, iMovie Projects, iMovie Events out and trying to relaunch. iMovie 7 also depends on the media browser, so you may want to consider temporarily relocating your iPhoto Library elsewhere to test if something's wrong with that too.