I was able to locate the problem.
Its unusual but the problem was Eurobet's software conflicting with my Sound Card, either drivers or associated software. I'm actually unsure if its a combination of the related software or 1 in particular. FWIW the Sound card I
did have installed was a Creative Sound Blaster X-fi XtremeMusic, which is now back in its original packaging!
Everything seems to be running fine, 'cept for me as I took a 55BB drop @ limit while I was testing to see if it was working !
Edit: I did once however get a run-time error -
linky tho I haven't seen it again.