Hi there...
It may happen to you that you wanna remove an empty layer that you created before but delete option is grayed out in layer-manager and you no longer able to remove that layer. just remember that 3Ds Max never let you delete a layer while it contain some nodes nor default layer called “0”. but in some rare situations even an empty layer that you created and then you have done with it and want to delete it, but 3Ds Max not let you do that. It’s happen because of some unclassified nodes that came with your imported models from other programs, so you can’t see them in viewport and not in layer manager too. The only way to get rid of them is to select that Nodes from MaxScript and delete them manually so layer’s delete option will back again.
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Here is a link to my website where you can download the Script that do this job for you.
hope you like it.
