Currently Being ModeratedOct 6, 2012 1:15 PM (in response to TNPhotog)
I would suggest shutting down iMovie and then re-starting your Mac. It sounds like you are out of virtual memory. A restart should cure it.
Currently Being ModeratedOct 7, 2012 7:02 PM (in response to AppleMan1958)
Well, that made sense, but unfortunately, it did not do the job. Still can't see the video in the preview window. It won't play at all when I hit the space bar. But, the videos below that I imported DO play in the preview window. I guess I may be going to a Genius Bar.