Hello. I have download 2 apps, compiled (over MIT-App-Inventor (today) to my handy with Android 6. I start the apps, but they close immediately. The System requirements say: Android Operating System 2.1 (“Eclair”) or higher What could be the reason why the applications are not started but close…

Many thanks to all of you for your answers! I have recreated the apps and EVERYTHING is good! The problem is solved!