OsenPus WASD and arrow keys both work for me, as do normal-Enter and numpad-Enter. I guess all we can do is the standard array of troubleshooting:
- Try a fresh download. Things sometimes just randomly screw up.
- Get a raw copy of the game and patch it yourself. I don't know how things can screw up when reipatcher is just two clicks, but sometime patching it yourself is indeed the answer.
- Give
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a try.
- Are you trying to run the 64bit version on a 32bit system? Probably not since the majority are on 64bit these days, but it could be worth trying the 32bit version out. It's best to match the game version to your system version, though in my limited testing the 32bit version ran fine on a 64bit system (thought the inverse won't run).