Hello, First post here. I may be out of my league from the looks of some of the posters here but I'll give it a shot. I've been using Sonar and Reason together and separately for years on my desktop (PC). Works fine. Got laptop last year (also PC) and they work there too albeit within limits, but good enough for where I use them. But about a month ago when I tried to use Reason I got a message box: "unknown exception". That was when Sonar tried to bring it up as a rewire. But the same thing happened when I rebooted and tried it on it's own - click the icon and instantly the message box comes up without Reason ever showing its face. I cleared it off the PC and reinstalled it with exactly the same results. Anybody got any ideas? Am I going to have reformat or something drastic like that? Thanks in advance - this is by far the most knowledgeable place I've found.