You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
ValveTime.co.uk | Valve News, Forums, Steam
I've tried building cubemaps on several maps now, and each time the console throws this up:
Material "debug/debuglightmap":
No render states in shader "LightmappedGeneric_DX8"
Material "debug/debuglightmapzbuffer":
No render states in shader "LightmappedGeneric_DX8"