Unexpected Error Occured

[Bentley]

MusicBee v3.2.6827.32939 (Win10.0), 21 Oct 2018 13:23:

System.NullReferenceException: Object reference not set to an instance of an object.
   at MusicBeePlugin.BackupType.save(String fileName)
   at MusicBeePlugin.BackupIndex.saveBackup(String backupName, String statusbarText, Boolean isAutocreatedParam)
   at MusicBeePlugin.Plugin.regularAutobackup(Object state)
   at System.Threading.TimerQueueTimer.CallCallbackInContext(Object state)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   at System.Threading.TimerQueueTimer.CallCallback()
   at System.Threading.TimerQueueTimer.Fire()
   at System.Threading.TimerQueue.FireNextTimers()
   at System.Threading.TimerQueue.AppDomainTimerCallback()

[phred]

This might be caused by one of your plugins. Suggested fix is to disable all of them and then add them back in one at a time until you find the culprit. And then post it on that plugin's thread so the author can address it.

[Bentley]

I tried placing this in the plugin forum but it does not show. I found it to be plugin 'additional tagging tools' that was causing the issue.