Ativ SE camera wont take pictures?

[WPCentral Question]

When I open my camera the viewfinder comes up and it says "tap screen to take picture". When I tap screen to take picture nothing happens. I can pinch to zoom but no picture. The camera will work if I reset and don't sign in but I want all my stuff on here. tried uninstalling all the other "lenses" but no change. any ideas?