Please, only one thread per problem. Your second thread about this has been deleted.
Can you please provide more information about the issue. What were you doing when it happened? Did you load an app or theme?
Have you tried a battery pull/hard reset - with the device on, remove the battery for 30 to 60 seconds, put it back in and let the device reboot. Does that fix it?
Using Google and searching on the term "bb app error 606", I found this: KB23954-"App Error 606" is displayed on the BlackBerry smartphone