Arthmoor, are you aware of http://www.tesnexus.com/downloads/file.php?id=29289, by any chance? The creater claims that he has requested that you merge it with the UOP.
Also, http://www.gamesas.com/index.php?/topic/1091480-relz-unofficial-oblivion-patch-320-and-326-hotfixes-relz/page__view__findpost__p__16021456 but I get the impression that no one noticed it:
While browsing through the construction set recently, I think I discovered a bit of broken dialogue.
At the beginning of the game, Uriel Septim declares that he knows his sons are dead (No, they're dead. I know it.) then Captain Renault says, "My job right now is to get you to safety." After that, Uriel is supposed to remark, "I know this place ... the prison?" and Renault replies, "Yes, your Majesty. Beneath the Legion Compound. We're headed for a secret passage known only to the Blades. No one can follow us through here."
In reality, I have never heard Renault's reply to Uriel in the game and Uriel's remark is a hit-or-miss affair. Sometimes he will say it and other times Renault will go from "My job is to get you to safety." straight to "What is this prisoner doing here? This cell is supposed to be off limits."
All the dialogue I have mentioned is present in the Construction set (Charactergen quest, conversation tab, CharGenMain topic). Quickly looking at it doesn't immediately reveal what the problem is since the dialogue script all seems to be correct. Also, the dialogue doesn't do anything important so you can label this as a cosmetic fix.