Did you clear your cache after removing the parts of the mod that deal with packs you do not have installed and still get the error despite not having any conflicting mods installed? If this should be the case, please tell me.
It might be due to using activitypreferencestweak without having alle the packs that came with preferences installed. I could split that mod up as well, but I tend to avoid splitting up mods because if affects loading times to split a mod up into separate modules so I only do it if it is indeed required. In the case of that, it normally should not be required as the game will not access the traits unlike they are actually assigned to a Sim.