Error burning DVD in ATI AIW Library

I have an ATI All-N-Wonder card and have captured a few tv shows to my harddrive. When I try to burn them to DVD using my NEC ND-2500A it errors right after it says it’s building the menus with an error that says:

Cound not complete the last command because: Unknown Error

Any ideas on how to fix this. The burner works great with Nero.