Did you click inside the room or on the door? Were you holding the mouse button down, so the characters would follow the mouse direction?
I went through there several times, just checking again recently to see if the water bottle was the only thing you needed, and didn't run into this.
About the door opened by levers, did you try just the 4 levers? The trap should show up then.
What did I do? Good question. I just don't know. I clicked that door probably a few times, then I wanted to move along, but I couldn't, and the deathknight just followed my char. My char went in first, and the deathknight then followed through that door, like it wasn't even closed. I didn't TRY to walk through that door, that's for sure. I've been attempting to force myself through for the last 10 minutes, but that hasn't worked. Bleh.
I'll see about the levers again in a minute.
