Hi there, ok do me a favor and try out the following: May be you could also reproduce the problem with your current installation of X-Plane but I just made sure it was not anything else that was causing this strange behavior. - Get a brand new installation of X-Plane 10.5r1(can be also the Demo) - install the CRJ 200 1.4.5 - start X-Plane - after you see the inside of the default B747, wait for 10-15 seconds - bring up the location map and chek out to see if the planes that were on the ground together with you have moved. There should be a small purple line showing the path they have travelled since start. It should be visible. - now load the CRJ and then quit X-Plane so it would be loaded the next time we start the sim - start X-Plane and wait for 10-15 seconds - I do not know what you will see, but I do not see any planes on the ground moving, only those that are in the air have a purple line aded to them. What I noticed is that if I disable the CRJ Avionics plugin and reload the AI planes they immediately start moving, and afterwards if I try to reenable the plugin again X-Plane crashes. So to wrap it up: CRJ is loaded and the Avionics plugin active - no ground AI movement CRJ is loaded and the Avionics plugin disabled - ground AI movement present Any other default XP10 plane is loaded and the plugin active or disabled - ground AI movement present I know that ATC is work in progress, but I still enjoy it when flying planes other than the CRJ. I hope there is a workaround for me here. I am currently using X-Plane 10.05r1 and CRJ-200 1.4.5 under Windows 7x64