So I don't talk to him, and take him over to Regis, the conversation has me and my party and Drizzit ported to the Nine Hells, I drop yet another party member to take on Wulfgar. So now I figure I can ask Drizzit about the spellbook. I do, and guess what? He says I got business in IWD, and boogies out on me.. him AND Wulfgar just leave, leaving me and FOUR of my other lvl five party members, alone in Nine Hells.
I never at any time get anything BUT this response! I have LG male paladin, 20 reputation. Needless to say, I reloaded

It is at NO TIME, thus far possible, to take to Drizzit without him leaving.
I decided to take another character out to meet Drizzit, a CG female fighter. She does not have Dyhanier in her party. Guess what? Same thing happens! Kivan and Ajantis both recognize Drizzit just fine. I will try one more old save where Dyahnier has not even been rescued yet, but I got a feeling, it's going to be the same problem.
Is there any other work around besides never ever talking to Drizzit? And if that's the case how do I ever complete Dyhanier's quest?