Referência de objeto não definida para uma instância de um objeto.
em FrostySdk.Managers.AssetEntry.get_IsIndirectlyModified()
em FrostyEditor.Controls.FrostyDataExplorer.UpdateTreeView()
em System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
em System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
em System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
em System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
em System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
em System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
em FrostyEditor.MainWindow.<openModMenuItem_Click>d__17.MoveNext()
--- Fim do rastreamento de pilha do local anterior onde a exceção foi gerada ---
em System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c.<ThrowAsync>b__6_0(Object state)
em System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
em System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)