finalize project error message
I have completed a project in iMovie 11' and it's length is 1 hr 10 min. Prior to finalizing I restarted the computer to ensure everything was cleared out of memory, opened iMovie and clicked Finalize Project. For this HD movie it told me approx 20 hrs to complete. After 3-4 hrs I get an error message telling me that it cannot complete the "finalize" process because a file is open with write permission. I have tried twice now with the exact same error. Nothing else is open except iMovie. Help needed. This is a compilation of video for my wife's 40th birthday trip to Vegas and it is a gift to her.
Thank you
MacBook Pro, Mac OS X (10.7.2), iMovie 11 is loaded on this machine