I got one Divx AVI with AC3 audio to work with Sub2Divx. Nothing else I tried for putting subtitles in the AVI would display the titles in any player I have on Vista.

All well and good, right? NOT. After working that one time, Sub2Divx will only pop up an error message that says Runtime error 55, file already open when I go to output the .divx file.

Well, of course it's already open, Sub2Divx has it open! The output file can't be open because it doesn't yet exist. There appears to be only one message thread on the net about this error with Sub2Divx but it's in Polish.

I know XP and Vista have a 'habit' of putting multiple file handles on various files so I tried Unlocker (with Sub2Divx not running) and it found nothing. I rebooted and went directly to Sub2Divx and still it gives me the error.

I just tried going to the batch commands menu and it gave me the same error message.