I was wondering whether someone could help me. After save game issues I decided to reinstall my Steam version of CK II. Upon starting the game I notice that I have the wrong checksum. I have the GamersGate checksum (LFOE) and not the Steam checksum (YYEV). Upon removing CKII I removed the CKII directory in the Steam folder and the Crusader Kings II directory under Paradox Interactive under MyDocuments.