USSExpressionsLoader.xml looks fine. So I suppose that file can be ruled out as being the culprit.
I would look into the whole "taking ownership"-deal, that's not supposed to be happening, from my own experience.
Once Aslain wakes up, maybe he can see something else in your log files, that might help out as well.
I got a response on Reddit... By selecting "Reset Skills" for gold, you can see how many skills you can reset; it will be one less than their current skill-set... just be very careful to not confirm the reset (unless you're ready to do so).