I was in Chpt 2 right after witnessing Xzar being "silently killed" by a certain "supposedly Montaron" harper, Jaheira was approached by a sister harper and left my party for a while.About a day later she's back claiming that my party is being summoned to the Harpers' Hold in Athlaka.When we reached there, the door's locked!! I'm now in Chpt 3, Jaheira still insist me to report to the harpers' base and the the bloody door is still LOCKED!!!...................help.

You have to make sure Jaheria is with you. Have you been in the Harpers Hold before? If not you have to talk to Rylock (??) first. Are you going to right building, the big orange one on the far south west portion of the map. Other than that i don't know.