Does this happen with all of your files or just particular ones? Are you trying to playback the file in Quicktime or in the DivX plus Player?
We'd like to get some more info about the file. Would you please follow the instructions here
to analyze your files in MediaInfo and export the analysis from MediaInfo as Text (.txt) files?
Please share the documents here by doing the following:
1. Upload the documents to scribd.com: http://www.scribd.com/upload-document...
2. Make sure the documents are public (this is the default setting)
3. Copy and paste the Document URLs in your comment on this topic thread