I uninstalled Alcohol 1.9.5, then started installing DT 4.03, but the SPTD driver won't load and the event viewer reports:
Source: sptd EventID: 4
"Driver detected an internal error in its data structures for ."
without any other details. Obviously, DT won't complete the installation.
I didn't have any previously installed SCSI driver (except maybe Alcohol, that was uninstalled), but I have the Sonic RecordNow! Plus burner and a "Patin Couffin engine" under "VSO devices" in the device manager.
I'd appreciate some suggestion, before I take any further action.