Having spent a while looking through the forums, I haven't found an answer. I am trying to play NWN2 multiplayer. I found the CD keys, and the SerialTool as well as nwncdkey.ini. I input the keys into the tool, saved, and verified that they were in nwncdkey.ini correctly. Despite this, I'm still getting the "Your individual serial key is not assigned" error. Anyone have any suggestions for where to find a resolution?

Maybe these 2 posts might help.

Step-by-step guide: https://www.gog.com/forum/neverwinter_nights_series/discontinued_gamespy_support_information_and_a_unified_list_for_alternatives_to_the_master_server_l/post24

Also edit %userprofile%\documents:
https://www.gog.com/forum/neverwinter_nights_series/nwn2_cdkey_problem/post4