[Pierre-Marie Baty]

You should have not tried to merge the multiplayer and singleplayer SDKs like what you did. If I were you, I'd start with a fresh singleplayer SDK. The singleplayer SDK contains ALL the features from the multiplayer one, PLUS the monster code. If you don't need it, don't care about it, but if you need some parts of the single player code, start with the SP SDK instead of trying to merge it into the MP one.