My app crashes on Android 2.3.3 phone

you avoided it from the beginning, but now comes the time to logcat...

Taifun

unknown

Does this happen right at the beginning, when you launch the app? In other words, is this the first and only thing you see?

Every time I open it since the first try.

With the APK versions you created previously (i.e. with targetSdkVersion=14) you would not have been able to install your app on a device with API < 14 (i.e. especially not on Android 2.3.x).