zlaywal: Thanks for the reminder. I will back-up up my nwn folder, especially
The Bonus & The Soundtrack. What is telling from
the Steam page, the expansion and the Soundtrack are to be purchased separately if you don't have the premium edition.
Note that the expansions that are sold separately there are not the expansions included in the Diamond Edition, those are also included in the basic NWN EE. Three of the four expansions that you have to pay extra for are expansions that originally had DRM on them, never made an appearance on GOG and weren't available for sale anymore for a long time. Some will say they were officially free for download later on, but that's not really true; they were the same as abandonware, not legally free, just abandoned and noone cared anymore. Darkness over Daggerford, on the other hand, has always been legally free. It was initially planned as Premium Module, but then Bioware/Atari decided against releasing it, so the people who created it put it on the community vault for free. Apparantly the original creators have now reworked it to sell it commercially.
I'm not a fan of the EE and its pricing models myself, I just meant to post this info in order to avoid confusion.