Sorry.......here is my problem: the sim runs fine, all the routes, all the activities work great - - its only when I install any JR downloads - I lose cars/engines in the activities. I also get the "script exception" in the right hand corner. Also if I build a small route, the cars will appear in surveyor but not in driver - all I get is engine smoke and sound - no cars. But if I pull up the map, it shows cars on the tracks. Could this be a computer problem???? I noticed some of the downloads are missing dependencies that are obsolete. I've got a new computer coming next week with everything that Trainz needs to run so I hope I can figure it out by then. Thanks :'(