found a new one for you. Started new save and can't select any text for the slave.
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