When you open the inventory you see you main character but you must click on his portrait than press num 1, after its been aktivatet you press again on the portrait of the main character and press num 2-7 and then you press again on the main character portraint. You should now see the changed stats, if not try to click the portrait again and press num 2-7 and click the portrait again. If you see the changed stats close the inventory and press F5 to save the game and load with F8 if you go to the inventory again and it crash just restart the game and load the autosave game (this from the F5 save) and you will see the changed stats.
I hope this help you.
otherwise I could make a video, and show every step by step.
thanks for the detailed write up, looking forward to giving it a shot.
*side note, keep getting my post replies kicked back because of some security error, hence the new post, very annoying.
Clicking on the portrait has fixed the issue. I dont always have the issue though, seems intermittent. Regardless, the tip worked.