EDIT: Whoops, I just now saw your previous comment in the other thread. Below is what I just wrote, but I'm guessing you have already tried this:
Hi, sorry the game isn't running well for you. Which version of Windows are you running?
One reason for the change could be that the game now uses some external files - config.ini (for control information and preferences) and a save file if you have a saved game. Both reside in the game's local directory. It seems as though admin rights are a major hurdle for the game, so if you haven't already you might try running the game as an administrator (right click -> run as administrator). I'm looking into ways to resolve this permanently, but I don't have a timeframe for it. Let me know if this helps.