Bill, good to hear V8 was able to full flash the E37. Dont know why V7.5 cant, but Id try to use V8 as much as you can because V7.5 is deprecated and only being used until the full V8 tune file editor and scan tool are released.
If VATS are set to Type 1, try using Type 2 or 3. I think there is a note in the VATS patch description that suggests using Type 2 or 3. Ive found usually most vehicles are Type 1 from the factory, honestly not sure what Type 2 or 3 are/do. Try changing them and flashing it again (dont believe a full flash is needed for this part, but double check in the table description).