You might encounter a situation where you want to remove an empty layer that you created earlier, but the delete option is grayed out in the layer manager. and you are unable to remove that layer. After all you have to remember that 3Ds Max never allows you to delete a layer while it contains nodes or the default layer called “0”. But in some rare situations, even an empty layer that you created and then finished with, may not be deletable in 3Ds Max. This happens because of some unclassified nodes that come with your imported models from other programs. These nodes are not visible in the viewport or the layer manager. The only way to eliminate them is to select those nodes using MaxScript and delete them manually, so the layer’s delete option becomes available again.
