CFX-Post fails with fatal error:
Aborting due to unknown exception.
This is a known problem which exists for some graphic cards. To confirm, please try running CFX-Post in software rendering mode and see if it makes a difference:
Unix: run CFX-Post in mesa mode: cfx5post -gr mesa
Windows: set Hardware Acceleration to None in Display Properties > Settings > Advanced > Troubleshoot
If this makes it work, the graphics card drivers may need to be updated.