This is all very interesting. At one time, Sweetwater theorized that maybe ROladn VS-700 interface was causing issues. I have a brand new MOTU 896mk3. If I can find the drivers for it, maybe I'll switch over to it. (I had a link to the drivers once upon a time--I'll just have to find it. Needs to work with Sonar 64 bit on Windows 7.
Thanks.