This conversation has been merged. Please reference the main conversation: Photoshop: Unsharp mask preview button only turns it off. Re-checking box doesn't turn it back on. Have to change the settings
I have used this action for many years, and it has always worked perfectly until recently. I believe this issue started with Photoshop CC 15.1, and it continues in 15.1.1. I am running a MacBook Pro with System OS X 10.11.2.