Thanks for the kind words and interest! No, there haven’t been any recent updates to the modules, so the existing install directions should still work. The full list of required files is in the Sanctum download links file, so that would be the master list to check against to see which hak might be missing:
There are only a few extra haks needed for Chapter 2, though, and they’re mostly tilesets, so the list of candidates should be short. In fact, if you’ve played Chapter 1 and are launching Chapter 2 from the transfer area at the end of Chapter 1, it’s almost certainly one of the CTP tilesets that’s the culprit.
The most straightforward way to tell would be to try to launch Chapter 2, and after you get the missing hak message, exit the game and go into your NWN install directory. There’ll be a folder named logs, and in that folder should be a text file named nwclientLog1.txt. In the file there should be an error message that says “Couldn’t load the Hak Pak File,” followed by the name of the file it can’t find. Using that information I should be able to help you figure out out which files are missing, so that you can get chapter 2 up and running.