is this the most recent version?
I uninstalled 3.5.1 (I think?) to update to 3.6 which was not available. and deleted all patches.
Found 3.7 on moddb but it will no longer start. It runs the main screen with the game's title and then black screen crashes to desktop with the "we don't know what went wrong" error message.
I could get it to work if I had the older versions, but they are purged from the internet it seems.