Hi all, Someone deleted a Client Address set which is in use by a Protocol Rule (doh ;-) Now they get the error "At least one of the chosen client sets is not valid." when they try to view the "Applies To" tab of the Protocol Rule. I tried the following to fix this: 1. Re-create the deleted Client Address set (not working) 2. Tried to write a .vbs script which deletes the set from the protocol rule definition but I don't know the method for deleting a set. Can anyone provide quick help how to go on? Greets Christian