I have only a couple of mods installed via OMM; UOP/UOMP(w/DLC patches), Qarl, and ULComp. Other than the occasional NPC dual-face talking bug, easily fixed with the UOP remedy, there is one thing that causes a CTD, fast-travel to Roland Jenseric's, or fast-traveling from that same area. Is this a common glitch due to what seems to be added content in that area from the ULComp mod?

Obviously, I can just stay away from that area, especially since I've finished the quest involved, but I'm curious if this is common, or just a one-off due to my setup.

I've just seen that there is a patch to use when both the UOP and Qarl are installed. I'll see what happens and update.

Could be any number of reasons.

Check out http://www.gamesas.com/index.php?/topic/1204721-reinstalling-oblivion-without-removing-mods/page__view__findpost__p__17974208.