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I wanted to player Anno 1602 (GOG Version) again, but i end up with weird colors ingame.

I wrote a batch to kill the explorer, but it didn't help.
Also tried pressing the pause button twice while in main menu, but also didn't fixed the problem.

Any ideas what i can do?
i fixed it by using dxwnd.exe, an emulator that handles old directx games.
However, would be great to find another solution :)