Error saving

[N7-Valkyrie]

[CoCEd: 1.3.3.223, CoC Data: 1.0.2_mod_1.4.19]
System.NullReferenceException: Object reference not set to an instance of an object.
at CoCEd.ViewModel.ItemSlotVM.get_Type() in C:\Users\tmedwards\Documents\Visual Studio 2017\Projects\CoCEd\CoCEd\ViewModel\ItemVM.cs:line 109
at CoCEd.ViewModel.GameVM..ctor(AmfFile file, GameVM previousVM, ModType modType) in C:\Users\tmedwards\Documents\Visual Studio 2017\Projects\CoCEd\CoCEd\ViewModel\GameVM.cs:line 175
at CoCEd.ViewModel.VM.Load(String path, SerializationFormat expectedFormat, Boolean createBackup) in C:\Users\tmedwards\Documents\Visual Studio 2017\Projects\CoCEd\CoCEd\ViewModel\VM.cs:line 151
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.Controls.MenuItem.InvokeClickAfterRender(Object arg)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)