BTW I've just tested the track on 3 separate installs - v1.0, v1.1 and HQ patch, and there's a CTD every time, no matter if it is practice with 1 car only or race with 30+ cars, no matter of graphic and pit crew detail, no matter if replays are on or off.
The trace file shows nothing.
There's definitely something wrong with that track, I've seen often this kind of problems (ctd when leaving the track) with the first GTR game, but rarely with GTR2.
EDIT: SiGi at eSport-racing notes the same ctd problem on the track download page, looks like it is an old and well known bug.