Exception of type 'ProtoCore.Exceptions.CompilerInternalException' was thrown.
   at Dynamo.Engine.CodeGeneration.AstBuilder.CompileToAstNodes(NodeModel node, List`1 resultList, CompilationContext context, Boolean verboseLogging) in D:\dynamo\dynamo\src\DynamoCore\Engine\CodeGeneration\AstBuilder.cs:line 286
   at Dynamo.Engine.CodeGeneration.AstBuilder.CompileToAstNodes(IEnumerable`1 nodes, CompilationContext context, Boolean verboseLogging) in D:\dynamo\dynamo\src\DynamoCore\Engine\CodeGeneration\AstBuilder.cs:line 414
   at Dynamo.Engine.CodeGeneration.AstBuilder.CompileCustomNodeDefinition(Guid functionId, IEnumerable`1 returnKeys, String functionName, IEnumerable`1 funcBody, IEnumerable`1 outputNodes, IEnumerable`1 parameters, Boolean verboseLogging) in D:\dynamo\dynamo\src\DynamoCore\Engine\CodeGeneration\AstBuilder.cs:line 440
   at Dynamo.Engine.EngineController.GenerateGraphSyncDataForCustomNode(IEnumerable`1 nodes, CustomNodeDefinition definition, Boolean verboseLogging) in D:\dynamo\dynamo\src\DynamoCore\Engine\EngineController.cs:line 312
   at Dynamo.Models.DynamoModel.UpdateCustomNodeDefinition(CustomNodeDefinition definition) in D:\dynamo\dynamo\src\DynamoCore\Models\DynamoModel.cs:line 1314
   at Dynamo.Core.CustomNodeManager.OnDefinitionUpdated(CustomNodeDefinition obj) in D:\dynamo\dynamo\src\DynamoCore\Core\CustomNodeManager.cs:line 108
   at System.Action.Invoke()
   at Dynamo.Graph.Workspaces.CustomNodeWorkspaceModel.OnDefinitionUpdated() in D:\dynamo\dynamo\src\DynamoCore\Graph\Workspaces\CustomNodeWorkspaceModel.cs:line 278
   at System.Action`1.Invoke(T obj)
   at Dynamo.Graph.Nodes.NodeModel.OnNodeModified(Boolean forceExecute) in D:\dynamo\dynamo\src\DynamoCore\Graph\Nodes\NodeModel.cs:line 1194
   at Dynamo.Graph.Nodes.NodeModel.ConnectorsCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e) in D:\dynamo\dynamo\src\DynamoCore\Graph\Nodes\NodeModel.cs:line 1116
   at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e)
   at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item)
   at Dynamo.Graph.Connectors.ConnectorModel.Connect(PortModel p) in D:\dynamo\dynamo\src\DynamoCore\Graph\Connectors\ConnectorModel.cs:line 183
   at Dynamo.Graph.Connectors.ConnectorModel.Make(NodeModel start, NodeModel end, Int32 startIndex, Int32 endIndex, Nullable`1 guid) in D:\dynamo\dynamo\src\DynamoCore\Graph\Connectors\ConnectorModel.cs:line 82
   at Dynamo.Graph.Nodes.CodeBlockNodeModel.LoadAndCreateConnectors(OrderedDictionary inportConnections, OrderedDictionary outportConnections, SaveContext context) in D:\dynamo\dynamo\src\DynamoCore\Graph\Nodes\CodeBlockNode.cs:line 1009
   at Dynamo.Graph.Nodes.CodeBlockNodeModel.SetCodeContent(String newCode, ElementResolver workspaceElementResolver) in D:\dynamo\dynamo\src\DynamoCore\Graph\Nodes\CodeBlockNode.cs:line 263
   at Dynamo.Graph.Nodes.CodeBlockNodeModel.UpdateValueCore(UpdateValueParams updateValueParams) in D:\dynamo\dynamo\src\DynamoCore\Graph\Nodes\CodeBlockNode.cs:line 323
   at Dynamo.Graph.Workspaces.WorkspaceModel.UpdateModelValue(IEnumerable`1 modelGuids, String propertyName, String value) in D:\dynamo\dynamo\src\DynamoCore\Graph\Workspaces\WorkspaceModel.cs:line 1537
   at Dynamo.Models.DynamoModel.UpdateModelValueImpl(UpdateModelValueCommand command) in D:\dynamo\dynamo\src\DynamoCore\Models\DynamoModelCommands.cs:line 525
   at Dynamo.Models.DynamoModel.ExecuteCommand(RecordableCommand command) in D:\dynamo\dynamo\src\DynamoCore\Models\DynamoModelCommands.cs:line 38
   at Dynamo.UI.Controls.CodeCompletionEditor.UpdateNodeValue(String property) in D:\dynamo\dynamo\src\DynamoCoreWpf\Views\CodeCompletion\CodeCompletionEditor.xaml.cs:line 145
   at Dynamo.UI.Controls.CodeBlockEditor.CommitChanges(UndoRedoRecorder recorder) in D:\dynamo\dynamo\src\DynamoCoreWpf\Views\CodeBlocks\CodeBlockEditor.cs:line 159
   at Dynamo.UI.Controls.CodeBlockEditor.OnCommitChange() in D:\dynamo\dynamo\src\DynamoCoreWpf\Views\CodeBlocks\CodeBlockEditor.cs:line 111
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.IsFocused_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at ICSharpCode.AvalonEdit.Editing.TextArea.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.ClearValueCommon(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata)
   at System.Windows.DependencyObject.ClearValue(DependencyPropertyKey key)
   at System.Windows.Input.FocusManager.OnFocusedElementChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
   at System.Windows.Input.FocusManager.SetFocusedElement(DependencyObject element, IInputElement value)
   at System.Windows.Input.KeyboardNavigation.UpdateFocusedElement(DependencyObject focusTarget)
   at System.Windows.FrameworkElement.OnGotKeyboardFocus(Object sender, KeyboardFocusChangedEventArgs e)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.KeyboardDevice.ChangeFocus(DependencyObject focus, Int32 timestamp)
   at System.Windows.Input.KeyboardDevice.TryChangeFocus(DependencyObject newFocus, IKeyboardInputProvider keyboardInputProvider, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
   at System.Windows.Input.KeyboardDevice.Focus(DependencyObject focus, Boolean askOld, Boolean askNew, Boolean forceToNullIfFailed)
   at System.Windows.Input.KeyboardDevice.Focus(IInputElement element)
   at System.Windows.UIElement.Focus()
   at Dynamo.Controls.DynamoView.OnRequestReturnFocusToView() in D:\dynamo\dynamo\src\DynamoCoreWpf\Views\Core\DynamoView.xaml.cs:line 201
   at Dynamo.ViewModels.DynamoViewModel.OnRequestReturnFocusToView() in D:\dynamo\dynamo\src\DynamoCoreWpf\ViewModels\Core\DynamoViewModelEvents.cs:line 147
   at Dynamo.ViewModels.DynamoViewModel.ExecuteCommand(RecordableCommand command) in D:\dynamo\dynamo\src\DynamoCoreWpf\Commands\DynamoCommands.cs:line 79
   at Dynamo.ViewModels.WorkspaceViewModel.StateMachine.InitiateWindowSelectionSequence() in D:\dynamo\dynamo\src\DynamoCoreWpf\ViewModels\Core\StateMachine.cs:line 945
   at Dynamo.ViewModels.WorkspaceViewModel.StateMachine.HandleLeftButtonDown(Object sender, MouseButtonEventArgs e) in D:\dynamo\dynamo\src\DynamoCoreWpf\ViewModels\Core\StateMachine.cs:line 613
   at Dynamo.Views.WorkspaceView.OnMouseLeftButtonDown(Object sender, MouseButtonEventArgs e) in D:\dynamo\dynamo\src\DynamoCoreWpf\Views\Core\WorkspaceView.xaml.cs:line 621
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   at System.Windows.UIElement.OnMouseDownThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
   at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   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)
   at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
   at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
   at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
   at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
   at System.Windows.Application.RunDispatcher(Object ignore)
   at System.Windows.Application.RunInternal(Window window)
   at DynamoSandbox.DynamoCoreSetup.RunApplication(Application app) in D:\dynamo\dynamo\src\DynamoSandbox\DynamoCoreSetup.cs:line 60