Have either of you opened a support email with Slysoft on this? It may be a bug that they need to fix. I can tell you, however, that AnyDVD contains a fix for a Windows bug of this exact nature. It may be that the fix doesn't work on your drives and/or that it ends up CAUSING the issue in your case. Either way, I'd send them an email detailing the problem(reference this thread, as well) and see what they say.