As per title, I'd be randomly killing stuff on my sorc and get that message in a black screen and be kicked out. The game room would not exist after this (even if I stayed in it over 5 mins), and my toon would be rolled back to a previous state (most of the time somewhere in the middle of the game session, I'd keep some of the loot but not all).
Why is this happening? Is it some kind of anti-dupe measure? The last time it happened I merely shot a CL on the recently spawned Lord de Seis group, and that's hardly a big mob. And it was the second occurrence in not even 5 minutes!
Please tell me how to avoid this, if at all possible :(
Oh, and I should add that in none of the half dozen occurrences I've had did I get SoJ counts, so I don't think it would be related to DClone hunters. (Yes, it only occurred half a dozen times, but considering how little I've played lately it's almost every second game)