Nokia Lumia :: 920 Apps Not Starting?

I've had the Lumia 920 for about a week and a half now without any problems, and after the complimentary wireless charger came in, I used it. But now some of my phone's basic apps will not start. When I tap them, it shifts to a black screen (time still visible at the top right), and after a couple of seconds of nothing happening, the phone brings itself back to the start screen. Apps that still work are one's I've downloaded myself from the store and Music+Videos, but just to name a couple, apps like Messaging, Camera, Calculator, Calendar, Contacts, Settings, Mail, Internet Explorer, all give me the problem I've described.

I've tried turning the phone off and on several times, including a soft reset, but no luck.

I have not tried a hard reset yet as I was hoping there might be a solution without having to resort to that.