My problem is, obviously, related to Trainmaster, otherwise I wouldn't be posting here.
When I start a game in the year 2000 (Looking at the text file with the Trainmaster express cars reveals it first appears in 1995), when any train picks up passengers, my game crashes and I get this error:
"Pack element < PassTMK_Body.3dp > not found"
If I can't solve this issue, I won't be able to play past 1995 in game =/I haven't tried the other set of express cars, but I don't know if it would be any different. Perhaps I should try it...