The issue has been a recurring one, not just today, and the phone has been turned off many times (it isn't the best phone to be fair). IT happens on any cache. Strangely a box comes up saying it has crashed and will shut down, but when you click OK the app hasn't shut down, just goes to a blank page. Odd. Someone has recommended C:Geo, and that is free so I might download that so I have a backup while I'm away, and try uninstalling and reinstalling. If I can figure out this annoying phone and work out how!