Launchbox Crashing when downloading covers

[SonyaEmulates]

It keeps throwing this exact error

Method not found: 'Boolean Unbroken.RushDownloader.Download(System.String, System.String, System.Action`2<Int64,Int64>, System.Func`1<Boolean>)'.

App:     LaunchBox
Version: 13.6
Theme:   Default
Type:    System.MissingMethodException
Site:    Void CollectAbstractObserver(Download, System.String)
Source:  LaunchBox

   at Unbroken.LaunchBox.Windows.Desktop.ViewModels.DownloadImagesViewModel.<>c__DisplayClass123_0.CollectAbstractObserver(Download file, String destinatiaon)
   at Unbroken.BulkDownloader`1.IncludeSupportedItem(Object param, AsyncCompletedEventArgs vis)
   at System.Net.WebClient.OnDownloadFileCompleted(AsyncCompletedEventArgs e)
   at System.Net.WebClient.<StartAsyncOperation>b__78_4(Object arg)
   at System.Threading.SynchronizationContext.<>c.<Post>b__8_0(ValueTuple`2 s)
   at System.Threading.ExecutionContext.RunForThreadPoolUnsafe[TState](ExecutionContext executionContext, Action`1 callback, TState& state)
   at System.Threading.QueueUserWorkItemCallback`1.Execute()
   at System.Threading.ThreadPoolWorkQueue.Dispatch()
   at System.Threading.PortableThreadPool.WorkerThread.WorkerThreadStart()

Recent Log:

   7:39:08 PM Exception