App stops immediately on android

Hi all,
my app stops immediatlely atfer starting on the android emulator and on a nexus-7 device.
I have upgraded cordova and tried various things like removing and adding cordova plugins or removing and adding the android platform …

The app runs great in a browser.
ionic run android -c -l gives me no log output.

Question: How can i get logs / info from the startup process ?

Thanks in advance

Manuel

Check Logcat monitor when you are executing on Device/ simulator or Check console if browsing through web browser