Sorry, I'm not sure the xbox-version of the US is totally the same as in Europe, but strange and sadly that so many from US have problems with the xbox-version!!
I afraid the publishers do something wrong???
There was only 1 kind of a frustrating bug in my version, but simply to solve on my own (never ending loadingscreen after dialog with Rhode and with Arthur Gremory) via SKIP dialog

But all the bugs I read about the xbox-version now...? Woow... very sadly!

One thing I know for sure: In Keara's Fortress with the 5 statues there is a Note (sorry, NOT a book! - I was using a wrong word!), it names "Note" and in that Note is written:
The note, written in a shaky hand, contains but a few words:
"I solved it and still I cannot pass! They lied to me! They lied!"