Hey Gang, so I'm using Maya 6.5 and I'm trying to create an abient occlusion pass for an indoor environment. I've set up the shader by plugging the mib_amb_occlusion node into a surface shader. However, everything looks fine if I hide the ceiling, but once I turn it on I get a black environment. Is there any way to do Anbient Occlusion for indoor spaces?

Thanks,
-dann