Problem with customizing lock screen image

So I like flowing themes between my lock screen, account picture and desktop background. I can customize my account picture and desktop background no problem but when once I go to change my lock screen, my settings screen shuts down. Ive tried reopening it time and time again, restarting etc. Does anyone know the problem and how I can fix it?

I own a lenovo p400 ideapad laptop with windows 8.1 installed