Hey, welcome!
BTW, when you post like that, plz mark like this:
SPOILER
.
.
.
info that spoils.
ok
Thanx.
Anyway, you have done this stuff:
1. Nashkel Mines
2. Bandit Camp
3. Cloakwood
in that order, right? ok, try walking around a little then trying again. Have you tried entering the gate, or is it grey on your regular map? Try leaving an ara and entering it.
If not, I don't know what to do, this never happened to me.
Good Luck!
------------------
Lil' Angel 
Sword Saint and Enchantress of the HADB Clan
The Lady Lioness of Castle Kerhelm
Waitress at Cloudy's Cafe and the Promised Land
Official Restrainer of Table Dancers
PeaceKeeping Force, Intelligence Division
Emerald Dragoness of DOTW