I tried both solutions and neither worked /: I even completely trashed the "com.apple.iMovieApp.plist" file and the app still crashed as soon as I tried to import video. I tried the second one, but there was no file named "3ivxVideoCodec.component", so I deleted all of the other files and the app still crashed every time.
Can you tell us what type of video file you are trying to import to iMovie please.
Try opening the file in QuickTime. If it opens and plays OK, from the menu select Window > Show Movie Inspector. In the Inspector, what does it show for Format and Frames Per Second (FPS)?
Any other information about the video will be helpful, including whether it was shot on a camera/camcorder (include Model No.) or whether it was downloaded or from another source.
Also, please indicate how you are importing the video.
Message was edited by: John Cogdell