After I had changed my lights to static in order to prevent them bleeding through the walls, playing the level results in total darkness. I had my level rebuilt several times with different lighting qualities, which has been sucessully done every time without any error messages, and it all looks pretty good in the editor window. But after clicking the “Play” button all I get is complete darkness.
I think I must have changed something without noticing it, but I cannot think of what that could have been. Can anyone help?