Add skill points option seems to be working for me now.

However, the game refuses to save my characters after I level up / add skills. I've tried completing a quest and exiting the game afterwards, no luck. It drops me back to level 1 in Russel Square.

Normal Retail Version.

DX 9 32-bit Trainer 2

I had the same issues with not being able to SAVE.

Remember you can cheat with your LEVELUP as many time as you wish, HOWEVER!!! do not over add on to your ATTRIBUTES points, which is your stats.
For me, I am at level 27 with full gears and powers, I am able to quit the game and reload the game at the same station with all my level as 27.

best,
Cal