With the latest release of the Active911 app for iOS devices, a bug has been introduced which causes the app to crash on startup. The problem is related to a library we updated in this release. We are working on a way to resolve this issue and will keep you updated. If you have an iOS 6 device, please do not update your app to version 1.5.3.
Update: (Saturday, Nov 7) we have sent a fix to Apple. We are waiting for them to let us beta test it (beta app review). The fix also has a patch for missing text in the details area.