java.lang.RuntimeException: In datatase must be Unknown artist inserted!
	at com.ventismedia.android.mediamonkey.sync.SyncMediaHelper.addUnknownArtist(SyncMediaHelper.java:282)
	at com.ventismedia.android.mediamonkey.sync.SyncMediaHelper.checkOrAddUnknownArtist(SyncMediaHelper.java:121)
	at com.ventismedia.android.mediamonkey.sync.SyncMediaHelper.insertMedia(SyncMediaHelper.java:45)
	at com.ventismedia.android.mediamonkey.sync.SyncMediaHelper.insertMedia(SyncMediaHelper.java:326)
	at com.ventismedia.android.mediamonkey.sync.ms.MediaSync.remoteOnly(MediaSync.java:233)
	at com.ventismedia.android.mediamonkey.sync.ms.MediaSync.sync(MediaSync.java:109)
	at com.ventismedia.android.mediamonkey.sync.ms.MediaStoreSyncService.doSync(MediaStoreSyncService.java:135)
	at com.ventismedia.android.mediamonkey.sync.ms.MediaStoreSyncService$SyncThread.run(MediaStoreSyncService.java:108)