Hello,

Has someone ever faced the such trouble in maya 2011 : ( see the snapshot )

I have been making different layers for lighting the scene, but somehow after some time either the shader or the layer gets corrupted. What can be the possible reasons ?

some which i think are:
I am using "black hole" in Lambert to take out matte in some layers.
Too many layers my no has increased to 25 in some scenes.
Version bug.

Any kind of help would be appreciated..

Thanks