I'm running Cubase studio 4, delta 1010lt soundcard, XP. I have been running the stuttering controls V2 2600. I'm finding that cubase will not open multiple instances of V2, I can set them up, assign tracks, etc... Save & reopen - only the first instance will load. Revert to rev. 1.2 no problems - except that programs done on V2 sounds totally different on 1.2. Nice