Invisible block?

Hello, I was trying to remove a layer but Rhino told me that there is a block, but I cannot find anything in that layer or there is no Block in block manager. Is it a bug and how to solve? My goal is to delete the empty layer. Thanks

Try purging the file
You might also want to unhide and unlock

I just tried SelBlockinstanceNamed and able to pick that invisible opject, exploded the block, purged and layer is able to delete finally. So wierd Block manager did not have that block show up.

Hi -

Do you still have a file in that state?