Today I have a strange error, strange because the app worked some day ago and I don't change anything, I had also updated Android SDK and eclipse.
05-20 08:03:14.217: E/AndroidRuntime(1925): java.lang.NoClassDefFoundError: android.support.v4.app.NotificationCompat$Builder
05-20 08:03:15.918: E/dalvikvm(1716): Could not find class 'android.support.v4.app.NotificationCompat$Builder', referenced from method com.me.app.ObjReminder.setNotification
Why have I this error? How can I solve it?
EDIT: Thanks all, I solve checking 'Android Private Libraries' in 'Order and Export' tab. But I don't understand why the check was disappeared