That seems to be it, however, I never changed that option, and have never had Filebot installed on this machine before. I changed the renaming pattern for the files after installing the app, but that's it. Very weird indeed. I right-clicked on the rename button and chose preserve so I think I should ...

Whenever I rename files with the Windows version of Filebot on my Windows 7 machine, it names the files properly but renames them without the file extension. I have to manually go back through each one and add the file extension. This does not happen on the Mac OSX version.

-hogfan