Ever had trouble importing lengthy QT movie?

I’m trying to import about 44 minutes worth of a QuickTime movie into an .fla. I’m importing at best settings. Flash imports about half of the movie and then just quits, the import screen returns. No errors, nothing. Just goes back to the import screen. Has anyone ever had this problem and do you know what’s wrong? Is there a limit on the amount of data, frames, that you can import into Flash? The same thing happens whether I’m using my G4 or PC.

Thanx for any help!