Thanks for the info deeaa. Now I won't have to worry about losing my mind. My Nano vanishes too when the computer comes out of sleep. I'll try what you did by downloading the info from Korg. Right now I have it set a generic midi devise and it isn't working. I know it will work, but it sure is a pita to get it to do so.

I'm running C6.5 in Win 7 64 and haven't noticed any issue yet, but I haven't done a lot either so far. I didn't upgrade to C6.54 because the guys on the Steinberg forum really started complaining after they did. Also, you might want to check out what they say about moving to Win8. So far there is a lot of complaining about that too.

Anyway, your setup looks great. I'm still learning how to navigate C6 so maybe I'll throw a question your way once in a while.