I recently purchased a second disc of Audio Cleaning Lab MX (cannot find the "first" one which I had managed to successfully install on my desktop). The problem is when I try to get the "new" disc working ON MY LAPTOP as when I try to record the message "Encountered an Improper Argument" appears. I don't think I have Realtek on my laptop. Is this an essential prerequisite please? If so how to I get hold of it. When I've tried I keep getting a message that they need to scan my PC which I don't particularly trust. If my query is best dealt with by phone I'll be happy to ring within the working hours. Ido hope you can help. MAGIX IS BRILLIANT!!