Use the latest dev build.
If that doesn't work, make sure you have a good dump of the game by:
use the lateset dev build, right click on the game, go to properties, and generate the MD5 hash sum. Then check it against the internet to make sure it is a good dump
If that doesn't work, make sure you have a good dump of the game by:
use the lateset dev build, right click on the game, go to properties, and generate the MD5 hash sum. Then check it against the internet to make sure it is a good dump