hlvis.exe crashes when compiling SFdoomsday

The problem with this map is not an ingame one - it's a compiling one. Attempt to compile the map with VIS - chances are you will get a "hlvis.exe has encountered a problem and needs to close" error.

I have no idea what could be causing this, though maybe someone can figure it out.

I know the map is laggy - this is an alpha version plus due to VIS not compiling fully r_speeds aren't really that realistic to begin with.

There is a large area of the map without a ceiling in which you can see much of the rest of the map - I personally am working on this. Feel free to do that yourself to see if that fixes VIS, but look for other causes as well.