I think your map is broken. At the exit to the first room, there are three buttons, none of which are labeled and none of which seem to do anything, in any combination. Also, if you press "interact" on the door, the funnel turns off, but the door doesn't open. I wasn't able to continue.
Wow. I'm feeling stupid right now. You guys are totally right. I completly forgot about that part, but I fixed it and i think that this level isn't broken anymore. I got rid of the pedestral button (which didn't do anyting???) and I placed the cube button on the floor so you can continue. As I said I'm new here so please bear with me..., this was my first test with the mods...