I don't think you ever answered if you were using mod-folder? Are you?
I still had question I wasn't sure about - whether RTW would read the UI files properly from main RTW/data folder or whether that would get it confused with the packs - there was some problem with roman UI not getting read if you tried just placing it in RTW/data/ui, but it seemed to work from mod-folder.
Otherwise maybe to do with what RedSpot mentioned about Senate, there was also something he posted here
https://forums.totalwar.org/vb/showp...4&postcount=22
about not having horde nation in roman culture and superfaction in use.
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