I like this game so much. In the past, I have played this game on Window XP.
Now, I upgraded my computer to Window 7 and reinstalled the game. But there is a problem when I launch the game.
When I launch the railroad.exe, Window say that ar.exe have stopped working. And after that, a new window say "Please insert the original Railroad Pioneer CD into your CD/DVD drive." although I have already inserted the CD.

Please help me!