Delete Unknown Node

You may see these errors if you received a scene file from others.
Handy script to remove unknown nodes like Mental Ray error

Usage:
Option A
Copy this the Maya script folder
Run these two lines of code
”’
import deleteUnknownNode as dun
dun.deleteUnknownNode(remove=True)
”’
Option B
Import this .py to script editor
Uncomment the last line
Select all and run