I just tried again in unstable 769 and this time a track that loaded fine in unstable 767 won't load anymore. The loading bar goes all the way to 100% and after a while it is as if rF2 goes into a tight loop where lots of system calls are executed since the "System" process in the task manager jumps to around 10% and all other applications start to run very slow and sluggish. I have run the sysinternals process monitor (http://technet.microsoft.com/en-us/sysinternals/bb896645) during the track loading, and the last things that happen before the loading halts are that rF2 writes to a temporary file in the Replays folder, after which it reads from arialbd.ttf and then everything stops. I saved the process monitor recording and uploaded it if anyone from the dev team wants to take a look. It's available here: http://www.racehub.se/rf2/rf2-track-loading-hangs.zip In case you wonder, the final CloseFile events are from right after I killed the process from the task manager, about two minutes after loading reached the 100% stage. If loading succeeds, it usually never takes more than a few seconds at that point. I would really like to figure out if it's an issue with the tracks or if it's an issue with the unstable release, because all of these tracks load fine in build 660. Any help is much appreciated.