You need 3dmax or maya (3d model viewers)
You need collada
And you need to understand how the scripts work, just explore around in your penumbra redist folder.
And apparently, I can't find that spoiler room. And yet the map file for it doesn't exist.
Spoiler below!
The room is a second radio room however, with some various bits and pieces of notes. Some of the things you can is, the room was left fairly recently, and it's in much better shape than red's room was.
Can you think of what I'm thinking?
Please -REP me.
Honestly, please do. I want to see how low I can go!!
Ignore that error message too. Just ignore it and keep going to give me -rep.