I'm unable to remove any printer drivers from the broker using iManager.
When I click apply after deleting a driver, I get the following error in

Exception saving resource print drivers configuration
NDPS Library Error Category: 1060004h
Other Error: FFFFFC50h

Any suggestions other than deleting the files manually?

Usually when I get errors like this in iManager, I just close my browser &
open iManager back up but that isn't fixing it today.

Currently Running:
iPrint Client 2.01
iManager 2.0.2
NDSP Broker 3.0.8
NDPS Manager 3.01h