I've the same problem here bro.
I have PIONEER DVR-A03 dvd wich worked well with primodvd until i upgraded the board to Gigabyte with nforce chipsets.
Or maby it's the TEAC 540e that makes the problem?
Anyway now it hang up in a middle of a burn with any program that uses the PxEngine!!!!! RecordNow PrimoDVD and Alcohol 120, nothing works.
The only program that works is NERO 6 wich uses ASPI drivers.
Tryed anything , upgraded the PxEngine with any version could fined. Installed and uninstalled the programs severl times, and even tryed reinstalling winXP two times. NOTHING WORKS.
I could use nero for burning , but it's not support GI file format.
Any help will be appritiated.