You should never use the 4th track as base unless you want to update Imola. The Imola .gp4 becomes very unstable when deleting objects...so if you have a s1ct04.dat file you probably also have a imola2001.gp4 file, right?
Try to export all the stuff from the .gp4 and use another track as base...and don't forget to rename the .dat file, too. That might be a solution.
Edit: Just to make sure, the problems occur with the Bahrain track which uses the s1ct04.dat file you talked about, right?
I was not sure now if you refered to to the same or two different projects.
Edited 1 time(s). Last edit at 01/14/2008 12:39AM by Ruboy.