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Fix null reference error

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This commit is contained in:
John Lewin 2018-02-16 18:48:41 -08:00
parent 784034f2c6
commit 3d924e012e
1 changed files with 1 additions and 1 deletions
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2
PartPreviewWindow/View3D/View3DWidget.cs
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@ -228,7 +228,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow
sliceButton.Enabled = sceneContext.EditableScene;
}
if (this.printerTabPage?.printerActionsBar.modelViewButton is GuiWidget button)
if (this.printerTabPage?.printerActionsBar?.modelViewButton is GuiWidget button)
{
button.Enabled = sceneContext.EditableScene;
}