Symptoms

Unable to modify Smart Objects in Designer
 

Diagnoses

I'm having a problem in designer modifying a smart object. I cannot removed methods that are no longer valid. When I access the 'methods' tab, highlight a method to be removed, and then click 'Remove' nothing happens when the ''YES' button is clicked in the confirmation pop-up.
 

Resolution

Issue was related to active Silverlight plugin on Chrome. Issue was resolved after enabling the plugin for Chrome and Firefox.