Just suddenly started getting this error again, although I'm not sure it's the same as the one I was getting back with V2.0. I spent all morning trying to whittle away at the possible causes. . .Addon Aircraft. . .Addon Scenery. . .Scenery Object Libraries. It doesn't appear that it was an aircraft as even after all were moved out leaving only default I still had the error. Next was scenery, that, in and of itself appears not to have been the culprit either as I took the sim down to nothing more than default. . .still got the error. Finally removed the 8 or 9 scenery object folders from the scenery library and the error disappeared. After that another problem arose and I finally ran the "Repair" utility and have had to more or less start over from scratch. Just a HU that errors can come from any direction, especially those you find the most improbable.