I used to get that with Sonar 8, specifically because that's when I was running Windows XP 32 Bit. Are you running Windows XP, Vista or Windows 7? Is it 32 Bit or 64 Bit? How many virtual instruments do you have running in one instance of Sonar? _____ From: ddots-l-bounce@xxxxxxxxxxxxx [mailto:ddots-l-bounce@xxxxxxxxxxxxx] On Behalf Of Sergio Felicano Sent: Tuesday, January 24, 2012 8:31 AM To: ddots-l@xxxxxxxxxxxxx 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