I had the same problem with crashing as soon as I wanted to import a movie. My fix which completely took care of the problem, was to create a folder and then move all other files into that one (could just be temporarily), so that I was left with only the folder with the movies that I wanted to import and the temporary folder with all the other stuff.
The movies that I wanted to import were on my desktop, but so were a ton of other files and what not. Had I know which other file was giving me the trouble, I could probably just move that one file into a folder or off the desktop and be rid of the trouble.
Hope this may help someone else too.