Dasha Vestibule - buged? (Spoilers)

I'm wondering if the Dash Vestibule mission is bugged.

The one to get to the 3 princes in the hidden fortress.

I've done, all 3 trials, did all 3 treasures, killed everything and it looks like the door on the left goes on to the "central" corrider... but it's closed.

I've talked to all the divine guardians, explored every knock and cranny.

Every object is crossed out. Did I over look something or is this thing bugged ><



Link in case it runs out of bandwidth - http://img224.imageshack.us/img224/6818/gw173sg1.jpg

Tip: Post this kind of threads in the Elonian section of the forum (-;

Could be bugged; not sure if they're supposed to open. If you want to finish the mission, just go through the center chamber....

may I ask where do you find the diamond chest?
nevermind, found it....

The chests are in order from left to right (in the U map): Diamond, Sapphire, Ruby.

The entrance to the Princes is in the first trial chamber in the center.