I am having this situation. Whenever I am trying to make a 3D section I got blank pattern.
This night everything was ok:
Today:
What is more I have the problem with displaying the profile:
It is there. When I will move it 500cm higher it appears.
There is also issue with displaying the textures. When I am zooming to them, they are starting to move and are noisy as hell. Both problems occur in the same time.
I had the same issue yesterday in another file. My graphic card drivers are up to date. I have reinstalled ArchiCAD without any changes. When I was doing this in the night from the sratch, it worked perfectly . Please help!