To follow up with our phone conversation.
I am receiving 'Error 1053: The service did not respond to the start or control request in a timely fashion'.
Since the Windows service could not launch the image I tried it by hand and it worked.
The abtntsrv.exe file has grown since VA 7.01 from 57,344 to 81,920 bytes. Not sure if that was to just make them LARGEADDRESS aware.
The abtntsrv.exe from the 7.5 and 7.01 install would not launch from the Windows service.
The abtntsrv.exe from the 7.0 install would launch, but it reports as being 'VisualAge Smalltalk Enterprise, Version 6.0.0 - 12/12/2001 VM Timestamp: 4.0,(NC) 8/26/2005' and needs the abtpay60.dll and abtprc60.dll instead of the 70 dlls.
Glad to see you were able to duplicate it. Good luck with finding the solution.