For some user's the common5.pac won't load or frezee i use common5.pac with _en at the end
Ok will try that

ever since i tried a custom CSS and needed other codes it has been acting up

That's because they use gecko. Riivo requires the _en as infernape said
If you're using gecko use the menu2 sc_selcharacter.pac
Thanks i'll rename the common_5.pac too common_5.pac_en