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However, Kanes wrath installed on my PC without C&C3 (because i had copied C&C3 from another PC (which doesnt mean it was "installed")). I couldnt start Kanes Wrath, because it said C&C3 was missing. So I added the registry entry (found it online) for C&C3, then it worked. Maybe you can play KW without C&C3 if you jsut add the registry entry?