I wasn't sure whether to put this in the rFactor forum or here, it's not a BTB track, but this forum is more active than the rFactor forum and the problem is track-related as it doesn't happen on other tracks. The title is self-explanatory - the track loads fine, there are no problems, and I've just started doing the AIW (main and pit paths done). However, when I exit the track and go back to the menu, rFactor AIW editor crashes. I can't work out why, but I know it's not AIW related because the main parts are done. This will be a problem when I do pit/garage/grid positions because chub_pearson's guide says that I must save the waypoints and go back to the menu, then re-enter the track and save the waypoints again. If rFactor cannot go back to the menu, this may not work, and I don't want to do a bunch of positions then find out that they haven't saved. Anyone who has downloaded previous betas of London Royal Mile will have seen this problem already. Here is the latest beta of the track: http://www.megaupload.com/?d=0XQUTBCG Does anyone know the cause of this problem?