Grimrock

The problem is I did. I was already on all (three available) sides of the hub. EDIT: My savefile http://speedy.sh/MCZY9/quicksave.sav Your savegame shows that you did NOT enter the southern side of the hub. The pressure plate there is not pressed, the alcove there is not empty. I have checked it, a...

no bug. You must have already pressed down the pressure plates on the other two sides of the central hub there. You probably didn't do the one on the North side of the hub, deep within the ice lizard lair. You can still go back and to that, and then the walls will open up. The problem is I did. I w...

Looks like I am stuck in Level 9. Tried many things, but nothing works. So I checked the walk-through
https://www.youtube.com/watch?v=tY3hSXANNII in 4:47 those walls are not moving up for me.

Probably bug?