Long time lurker of the forums. Enjoyed this mod so much that I'd thought I'd contribute:
When travelling to the upper-left or upper-right sections in the boulevard (Roma, so far, but haven't tried it with other cities yet), Each time I step on a fair area (not an EXACT spot) - CTD, no error msg or any forseeable reason.
When viewing that irishman companion's items, patrick I believe, something in the lines of "cant find mesh boots-invisible" pops up. You still trade with him, though - and then when you exit the trade menu - permafreeze, but not an automatic CTD. Might be a screw up in my game only.
PM me for any questions.
Cheers.