Export Failed

Im using TBS 4 and whenever i try to export movie (File>Export Movie) error message appears "Export failed, the file might be in use by another application"

I tried:
Reinstall quicktime (all versions from 5 to 7.3)
Reinstall OS (Win Vista 64bit)
Run it on another PC and OS (Win XP SP2 32bit)
Reinstall quicktime on that PC
Antivirus scan

but nothing helped.

Prewiev and swf export works fine but any other format do not.

Any suggestion where the problem could be?

GOT IT! 8)

Im from Czech Republic and our language have some untypical letters wich i used in folders names and that was the problem!
Just renamed all these folders and now it works well.

My nightmare is gone ;D