Wow, this sounds strangely similar to a problem I'm having with Combat Flight Sim 3. With ClonyXXL, the copy protection was (I think) SD 2.7.xx.
When I try to load the game, it pops up a message about a Debugger being detected. I thought it was very strange that it did this even with the original CD as well as the copy.
When I get home from work, I should disable the Alcohol drive and try it. I don't believe I have the latest version of A 120% so that might be the solution.