First off: Thank you for your efforts in bringing the PrC to the Enhanced Edition Plok.
Just a little heads-up that probably doesn't need saying... but might still help someone else, so why not.
When you install the PrC EE pack, make sure you do not have any files of the original PrC Pack (for old NWN) in your folders from prior experiments.
In my case I only purged the files from erf, hak and tlk, but forgot to delete the files out of database and as a result... the game crahsed on character creation and selection.
Once I deletes those three files, it now works.
Though I have one question: What's with the prc_ocfix? Is it needed for all three original campaigns, only the NWN campaign (but not SoU and HotU) or is it not needed at all?
Edit: I have a confusing issue. Everytime I start a new module, the game apparently created three files in my documents\neverwinter nights\database folder. And if I start another new campaign without deleting those files first, my game crashes in the character creator/selector. Once I delete them again, it works again... any idea what's up with that?