Anyone know what this means? Getting the crash listed below on Android app with Facebook events logger

Question

This is from the crash report at Google dev site for a published app using the Facebook appeventslogger. Doesn't happen in testing. Anyone know what this means? It is happening across devices. FB SDK 3.6.0. The missing class is in that folder and in the build path.

 java.lang.NoClassDefFoundError: android.support.v4.content.LocalBroadcastManager
 at com.facebook.AppEventsLogger.flushAndWait(AppEventsLogger.java:760)
 at com.facebook.AppEventsLogger.access$1(AppEventsLogger.java:732)
 at com.facebook.AppEventsLogger$2.run(AppEventsLogger.java:605)
 at java.util.Timer$TimerImpl.run(Timer.java:284)

Answer 1

Are you sure the v4 support library is getting exported with your APK? Sounds like it may not be. Are you using Eclipse? Is the support lib in your /libs directory?