Elgg 1.2 Message Problem

Hi all,

I'm still new to elgg but I have already create a group with a number of user to test the system which is hc3.buddyjoy.com. I met a major problem which is the Private Message aren't working as it suppose to. I can see the red "Messages" icon on the menu and I can see the number of new or old message at the Inbox list, but when I click on the message to intend to read the details, it bring me to dashboard.

I have no clue where to debug this problem, i hope someone have similar experience can share how you guys solve it.

Thanks.

Max.