DAVdroid 0.8, Android 5.1, Nexus 7 (2013) (deb)
java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference at at.bitfire.davdroid.resource.LocalAddressBook.populateRelation(LocalAddressBook.java:571) at at.bitfire.davdroid.resource.LocalAddressBook.populate(LocalAddressBook.java:248) at at.bitfire.davdroid.resource.LocalCollection.findById(LocalCollection.java:220) at at.bitfire.davdroid.syncadapter.SyncManager.pushDirty(SyncManager.java:168) at at.bitfire.davdroid.syncadapter.SyncManager.synchronize(SyncManager.java:50) at at.bitfire.davdroid.syncadapter.DavSyncAdapter.onPerformSync(DavSyncAdapter.java:146) at android.content.AbstractThreadedSyncAdapter$SyncThread.run(AbstractThreadedSyncAdapter.java:259)(From Play Store)