Drivers Download
When working in AutoCAD or one of it's vertical platforms, have you ever had a layer that you couldn't get rid of? If happens. You can delete a layer if it is empty, meaning that there is nothing using it. Sometimes it's a block that has an object in it that's on that pesky, non-deleting layer. If you are 100% sure you have an empty layer and you still can't get rid of it "nuke" it with the LAYER DELETE command. Just type LAYDEL on the command line. It will fully purge the layer and delete it. LAYDEL used to be an Express Tool, but now it's a core command in AutoCAD.
