Thanks for the quick response.
When running the program (JazzCD) with the CD in a true drive, the program operates as it should. Furthermore, the CloneCD image is mounted in the Alcohol virtual drive.
I have used Alcohol 52 to create the image and JazzCD halts with the "emulator detected" message.
I've uninstalled CloneCD, run JazzCD and get the "emulator detected" message.
What has to be done to remove references to Alcohol?