Every time i go into the lair and meet up with the order of the radiant heart knights and then meet up with drizzt's party, they always the say HE HAS BETRAYED US! deal. I didn't even do anything, I was just wondering if anyone experienced the same problems or if anyone knows whats wrong. Thanks for your help.

Maybe u hit them with an AOE spell?? Coz I once casted a fireball and accidently hit one of them and they said I betrayed them, so try reload and see if it works.

could be harbringer...its a bug. reload, and download baldurdash patch.

You may also want to put a spoiler tag on this.

Anyways back to the point, it could be what userunfriengly said (probably)

Or it could be you left the Windsear Hills quest unfinished once you had started it (not likely).

Thats all I can think of.

This may be because the vampires cast domination on you and they ade u attack him. It happened to me.

Actually, I think the vampires cast Dire Charm ;)

Least they always do to me :(