I know 12 is the cap for enhancement bonuses to each ability score. Thought the skill cap was higher. (I actually hit that cap on Einar for Str with bull's sometimes.)
Also not sure if it's different for CoPaP vs. vanilla NwN...
(hence not simply googling it.
Edit: +50?! Wow! That's way higher than I thought!
"Any sufficiently advanced technology is indistinguishable from magic."
"Any sufficiently analyzed magic is indistinguishable from technology."