The suggested burn routines patch did work for me either. Does anyone have a suggestion?
Edit: Problem solved!
Following someone else's suggstion, I made sure all directories match up. I had the 'My TV' directory set to the D-drive, while all others pointed to the G-drive. Once I changed the 'My TV' directory to use the G-drive as well, the burn process worked. And I re-encoded all files just to make sure.