"Export Failed" Problem exporting to quicktime

Hi. I am having trouble exporting to quicktime. I’m on Mac 0sx, TBS 4.0
When I try to export an entire movie, I get the error message “Export failed. Might be in use by another application.” I can’t figure out what the problem is. Any suggestions? Thanks.


Have you tried with different codecs when you did the export? Also which version of Quicktime is currently installed on your machine. Are you able to export to all of the other formats?