Reviving an old thread, I know, but the suggested remedy for this issue is incorrect. The file length is not at fault.
I just successfully exported a file, then tried to export the file again after a slight revision. The only difference in the new filename was an incremented number at the end.
Here are the filenames I attempted to save:
Interview – Guinea Pig final1.mov
Interview – Guinea Pig final2.mov
And here is what ended up on my HD:
Interview – Guinea Pig final1.mov
Interview – Guinea Pi#987E9.mov
So it would seem it’s not the length. It also can’t be the export or sequence settings since these were unchanged.
My vote is that it’s still a bug (as of FCP v 7.0.3 running on 10.7.3).