Autobot uses the same data folder, so if Ruizo really did follow all the instructions johnny gave, there shouldn't be a problem. So really, it might just be that he/she thinks UO Tiara still includes a patcher and its immediately visible functions e.g. CP Reader
Though these are just false accusations, but the point is that UO Tiara should work fully if you just have UO Tiara's newest version data-packed. Also, even if an old version of UO Tiara was still in the Mabi folder, almost all of the mods still work. Generally, the only things which are updated in each version of UO Tiara are race, itemdb or skill .XML mods (and now, race and itemdb are both .txt, so really, UO Tiara probably only needs to update every half a year)