JtD Got it. Downloaded a new 4.11 file from a different server and took the chance and just added it to current 4.10.1 it worked perfect so I dumped in 4.11.1 and it worked too. Earlier copy of 4.11 must have been corrupted? Patches are all in the good so thanks. Now do you know anything about AI proximity behavior controls. I'm getting into a lot of close quarter slow turning aerial combat now and when things get with in certain parameters [single-player] the game stops your ability to maneuver, the joystick no longer responds to input, and you can be pushed into the ground by an AI aircraft from above you or crashed into from below. It's like the software says, "if you are here in this space at this time you must be the AI aircraft coded to be flying this flight path." and no longer "sees" all the aircraft. Thankfully it doesn't happen a lot but I'd sure like to turn that bit off. It's not like it stops AI aircraft from colliding into me which is a greater fear than being shot down because of the way the single-player campaigns are scripted. Like my complete flight going after the same single enemy aircraft while leaving me to dog fight it out with six. Six superheros who don't black out/red out or feel the effects of G as they turn, climb, dive in rapid succession. Be nice if Team Daidalos gave IL2 1946 single-player campaigns AI some attention. wink wink nudge NUDGE