I've raised an issue on Github: https://github.com/Gibberlings3/BG1NPC/issues/24
On a vanilla Steam BGEE (Windows 10, no mods) install (directory C:\Games\steamapps\common\Baldur's Gate Enhanced Edition) the game fails to start after installing v22.6 of BG1NPC. Specifically it fails after the 'Banters, Quests and Interjections' section is installed as I went through the process several times to try and see which part kills the game.