Is your script editor telling you anything? No warnings, errors? Can you show us a screenie of the render?
it says at the bottom: lambert1:cyclic dependency detected but I don't think its related
Do you have an environment for it to reflect?
I created a physical sun and sky in the render options. The box has the solid glass texture applied and you can see it against the background but is just sitting there completely black. Its also rendering very quick compared to when it was actually working.
Last edited by jarwulf; 10-05-2013 at 07:13 AM.