Think this one is also related to the issue of not being able to talk to the slave as slave shop isn't showing any personal text for the purchasable slaves.
Viewing post in Aric's Expansion Rebred
I don’t think it is installed correctly for you, those errors are definitely indicative that it’s not in there correctly. I would recommend either starting over and following the installation guide carefully (possibly on a freshly extracted strive if you want to be extra safe). All other mods need to be deactivated prior to installing Aric’s too so there isn’t a conflict on install