Hi Sergio and list, I got that error myself a couple of times lately. I believe it's a C Plus runtime error. I'm running XP on a 32-bit machine with all current updates and JAWS 12. The only thing new that I can think of that I was doing in a project was that I had a couple of instances of the Garritan plug-in. I didn't have a whole lot of tracks going either. One thing that I noticed before the error occurred was that the audio would stutter at times when I'd start playing material back; it didn't matter where I was in the project, just that it stuttered, then it played normally. I thought this was rather strange as I haven't run into this sort of thing until now. I use Fast Defrag every so often to clean up the RAM; it's the free version, so I don't know how thorough of a job it's doing. Mike ----- Original Message ----- From: Sergio Felicano To: ddots-l@xxxxxxxxxxxxx Sent: Tuesday, January 24, 2012 11:30 Subject: [ddots-l] run time error! Hi everyone, I am having an issue with sonar 8.5. I keep getting an run time error message and then it freezes up the computer to the point that I have to reboot the computer. This is happening quite often, does anybody have a solution for this particular problem? Bolo