Deleting block definitions

Good morning all. I’ve got a file with several mesh models imported from Sketchup 3d warehouse. I have exploded the blocks, successfully, but when I go to Block Manager to try to delete the Block Definitions I keep getting the message “Unable to Delete Nested Block Definitions.” There seems to be about 100 of them. Is there no way around this, please?? :smile:

The Purge command will let you delete unused things in a Rhino file, including unused block definitions.

Thanks, John. You’re the mannn.