Unable To Change Lock Screen

[LittleRedDot]

I was at a spot where I needed some security so I set up a pattern for my lock screen, but now all the other options are greyed out. I'm stuck with the stupid pattern, any ideas what's going on?

Sent from my Nexus 6 using Tapatalk

 

[Almeuit]

Go to settings, apps, and clear the cache on the "Settings" app.