I have re-installed v4. Pop message shows “evaluation” and I hear the tones. My registration numbers are accepted, and I re-start as suggested.
I have used “force 16-bit” because I may have 16-bit version, although I don’t know how to check it. Problem remains.
version 4 requires a 24 bit registration to work with 24 bit audio devices. If you have a 16 bit registration it will emit the evaluation tones even if you select “Force 16 bit”.
Version 6 and later no longer have the 16/24 bit distinction, they always work with both 16 and 24 bit devices.