Lever should have made a hatch appear - I'm told.
No hatch. Just a comment ("Oh that's what that did", which seemed opaque to me, and it turns out was) and a lever that only pulls once.
Starting over... Maybe next time.
Edit: now that I know what I'm looking for, there is no glitch.
The necessary second switch isn't destroyed by the fire room, and still works. The moving painting that made that second switch *noticeable*, however, is destroyed by the fire room.
Thanks for all the responses.
Last edited by PeteNewell; 06/05/14 11:20 PM. Reason: thread is irrelevant by later info