Monster class problem

[Finodborn]

Hello,

I just unlocked the half-drag on class (yay!) but cannot use it (bummer). I can click it in the selection phase, and the little square around it changes color, but race and class remain stated as "unknown". Is this normal?

Also, how to unlock the vampire unlocking quest? I've beaten Namtar's lair with three classes, but haven't recieved the quest itself yet.

Thanks!