[VL] - Object reference not set to an instance

[sebl]

i get quite often such Object reference not set to an instance of an object. pop-ups.

after clicking the exception away, the operation is kind of broken forever. this happens evertime when i click on input pins from there on. sometimes it helps, when i copy the operation into another utility patch, but not always.

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
   at VL.Lang.View.ViewHelpers.CanConnectTo(DataHub fromHub, DataHub toHub, Boolean force, Boolean sinkToSource, PreCompilation compilation) in C:\BuildAgent\work\9506352823f45313\vvvv50\VL.UI\src\VL Forms\PatchEditor\Helpers\ViewHelpers.cs:line 61
   at VL.Lang.View.CanvasView.ConnectionMouseHandler.MouseDown(VMouseEventArgs arg) in C:\BuildAgent\work\9506352823f45313\vvvv50\VL.UI\src\VL Forms\PatchEditor\EventHandler\ConnectionMouseHandler.cs:line 132
   at VL.Lang.View.CanvasView.ClickMethod(VMouseEventArgs downArg, VMouseEventArgs upArg) in C:\BuildAgent\work\9506352823f45313\vvvv50\VL.UI\src\VL Forms\PatchEditor\ModelViews\CanvasView.cs:line 925
   at VL.Core.Viewer.Handler.<>c**DisplayClass13_0.<OnClick>b**1(VMouseEventArgs up) in C:\BuildAgent\work\9506352823f45313\vvvv50\VL.UI\src\VL.UI.Core\Viewer\EventHandler.cs:line 431
   at VL.Core.Viewer.Handler.ParallelMouseHandler.MouseUp(VMouseEventArgs arg) in C:\BuildAgent\work\9506352823f45313\vvvv50\VL.UI\src\VL.UI.Core\Viewer\EventHandler.cs:line 248
   at VL.Lang.View.CanvasView.HandleMouseUp(Object sender, VMouseEventArgs e) in C:\BuildAgent\work\9506352823f45313\vvvv50\VL.UI\src\VL Forms\PatchEditor\ModelViews\CanvasView.cs:line 736
   at VL.GraphicalEditor.Piccolo.GraphEditor.FCanvas_MouseUp(Object sender, MouseEventArgs e) in C:\BuildAgent\work\9506352823f45313\vvvv50\VL.UI\src\PiccoloGraphicalEditor\GraphEditor.cs:line 152
   at System.Windows.Forms.Control.OnMouseUp(MouseEventArgs e)
   at Piccolo.NET.PCanvas.OnMouseUp(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

[tonfilm]

thanks for the exception, i’ll look into it. is it the input pin of a node in the patch or the input pin of the operation definition?

[sebl]

ah, missed that… this regards any pin of any node inside the affected operation

[tonfilm]

fixed in latest alpha.

[sebl]

nice, i can patch again, thanks!