Does that one quest make any practical difference in the game, or interfere with the completion of the game? I understand how bugs or broken quests can be frustrating, though. Ideally all bugs and glitches within the control of the developers should be fixed, but then that aplies to the whole software industry. For games, the publisher decides when something is released and may be responsible for support and some of the quality assurance, which they may or may not provide. Larian has already stated that they would like to clean up the remaining problems with Divinity. Maybe they will have the time and resources to do so after they make their 'next buck' when the 'new bug filled game' is released. Since you asked so nice, that is.

Programmers and software testers tend to do their best work sitting, so getting off their 'Belgian butts' would be counter productive. <img src="/ubbthreads/images/graemlins/silly.gif" alt="" />

If you absolutely have to have a bug free game that can not crash or have problems with the system drivers or OS, get an X-Box or PS2.