FTI--I have O.S. Version 6.5 on my Virus KC and it works just fine. The Version 6.6 you have is a Public Beta version that supposedly addresses arpeggiator bejavior/timing and midi sync issues. I am not too hip on beta anything because you are indeed using at your own risk and I have enough on my learning plate not to mention physical health issues from my military career!!
Robert
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"Language is a VIRUS from outer space" --Wm. S. Burroughs
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