Actually, my name is Shane, but no need to worry about that.
As I said in my previous post, as long as you are running Trainz in admin mode (as per the instructions) you should be OK.
If you have run Trainz in non-admin mode, there is a way of recovering the data...
You will need to go into C:/Users/(your username)/AppData/Local/Virtualstore.
Inside this folder is a 'mirror image' - or rather what was saved while Trainz was running in non-admin mode.
Once in there, treat it as if that was the C: folder (ie: you would go into the Trainz installation folder (from that folder, not the C:/ one) then go into Local. If there are any folders in there that do not appear in the Trainz installation folder, you can copy the folders across - remember to click Yes/Continue when prompted.
Hopefully this will fix the problem.
Shane