I have a bit of an odd problem that I ran into. The game has run perfectly fine up to this point. However, on entering the private sensorium in the hall in the clerk's ward the bottom half of the screen is black. The top half is fine and the spheres and npcs seem to load fine, but the bottom half is completely dark. Trying to find the exit to the room is sort of a pain.

Has anyone had this sort of thing happen before? I'm using Windows 7. Not using any mods