Skylights and custom ceilings?

[Dan Park]

We have recently been able to reproduce a crash when having the roof overhang area selected and hitting f12 to rebuild walls, floors, ceilings. Typically we keep this layer off and locked so it doesn't happen but if you have turned all your layers on and unlocked them you may experience this.

The roof overhang area is in display options on the system tab. Layer 14. There is never a reason to modify this as it is reconstructed whenever you to a rebuild.