Hickory: It's part of the story -- do your homework instead of throwing accusations around. In act 3, once you tell Sir Nevalle that the keep is ready, Jerro disappears -- Bishop should offer to track him down.

Xankara: After reaching Act 3 of NWN2, I come back to Crossroad Keep only to find that when I try leaving with Ammon Jerro in my party, he vanishes completely. I cannot find him in the basement, and though his name is shown in the party list adding him does nothing other than remove his name.

From what I've read, I can try looking up save files and checking files there by removing the party member files, saving without them, then re-adding their files but this doesn't work as Ammon Jerro isn't located there either. I'm unsure of what I can do since it seems a lot of the resources for NWN2 died along with the IGN dedicated resources I've found through google.

Honestly, this is killing my urge to continue playing. As fun as it is running into constant bugs that set me back hours, constantly making any game-play a mess of AI and simple pathing (NOT TO MENTION the complete lack of proper feedback since Obsidian never thought to finish their game or update and fix it), if I am expected to reset hours to find an uncorrupted save file I'll be looking for a refund.

WingsOfRequiem: honestly I have no idea what are you talking about played trough the game several times(GoG version) and not once did I get this bug :/ also try using the debug menu add then type "rs ga_roster_party_add(#name)" without the quotes and see if it works for you

Xankara: I have no idea why this is the case, all I know is that I wasted hours just to end up disappointed.

Hickory: So why blame GOG? Tens of thousands of people play NWN2 from GOG, and I've never seen this 'bug' reported before.

Xankara: Because they host the game in the first place? People not running into this issue is not a reassuring thing for someone who does have this problem, plus there ARE people who run into plenty of other issues that are tied to the game itself admittedly. BUT I think that if you buy any game and run into these issues and find that you can't resolve them you have the right to demand a refund.

Xankara: Unless you can help me with my problem, please don't comment anymore.

Xankara: Well, I've tried adding him via console commands and although his name shows up as usual and i can toggle his availability as a NPC/ Companion, if I try to add him it just makes his name vanish. I have no idea why this is the case, all I know is that I wasted hours just to end up disappointed.

Belsirk: Maybe you should try the most desperate maneuver: Uninstall everything (including saves), delete the folder, download (again) the installers and reinstall the game.

As WingsOfRequiem stated, your bug is almost unique, so maybe the problem come from another point.

Another alternative, is getting a savepoint from other player with Jerro in the Party, if he appears in your setting, then was a epical bug in your session and a single new campaign should solved, otherwise, the desperate maneuver should help.