I upgraded my Nexus S a few days ago to Android 4.1.1 when it prompted me. Since then numerous apps fail to run. They all come up with the message "Unfortunately, 'AppName' has stopped" and then gives the option to report the stoppage of just hot OK and ignore it. Even an app I installed after the upgrade does this.

With so many apps having this problem, I have to think its an Android issue. I have checked the store for upgrades to apps and I have all the latest versions.

Anybody have any ideas on this one.?