Unable to complete Chateau D'Onterre dungeon

Emerald Graves: Chateau D'Onterrre dungeon

I have done everything I needed to do before I get to the upstairs and stand in front of the dragon head. The small gold box that I am supposed to activate, so that the tail will move and give me the key to the balcony does not have a X button to hit. Nothing happens. I log out and back in and still nothing.

I cannot complete the quest without getting the key.