Hi, thanks for the feedback.

grr feel stupid when i dont provide basis info (forgetful)
Don't worry, my questions were more "fault diagnosis" ones. Your answers woul have given me the probable cause. In the process you found it.

It sounds like a file type/codec problem as I suspected:

This particular dvd playes in my theatre system (sony dv8000) no problem
To get the other DVD software to work you need to make sure that it has the plug-ins for these as well.