Problem I get the following error message: It looks like you have installed an unofficial game modification that does not match your current version of The Sims 3. We recommend that you either uninstall these game modifications or get updated versions of them – otherwise you may experience crashes or significant bugs Cause Since patch 1.12/2.7/3.3/4.0 the game knows if you are using a CoreMod like  AwesomeMod, ErrorTrap or EGC Left over files from the old modding framework (Install Helper Monkey) Cracked version of the game Solution Never use a core mod with a different patch version than it’s for. Remove…