From 1aae05b9ef1b0f4ea3a33964cfc4d45e525b0c53 Mon Sep 17 00:00:00 2001
From: Matthias Braun <matthias.braun@visus.uni-stuttgart.de>
Date: Fri, 25 Aug 2023 19:18:22 +0200
Subject: [PATCH] fixes

---
 Core/GUI/Windows/WindowBranch.cs     | 2 +-
 Visualizations/Types/DEBUGColumns.cs | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/Core/GUI/Windows/WindowBranch.cs b/Core/GUI/Windows/WindowBranch.cs
index a23c4d0..f900ba6 100644
--- a/Core/GUI/Windows/WindowBranch.cs
+++ b/Core/GUI/Windows/WindowBranch.cs
@@ -249,7 +249,7 @@ private void delete_childbranch(WindowBranch delete_child)
                 clear_content(_content);
                 clear_content(kept_child._content);
 
-                if ((kept_child._children.Item1 != null) && (kept_child._children.Item2 != null))
+                if ((kept_child._children != null) && (kept_child._children.Item1 != null) && (kept_child._children.Item2 != null))
                 {
                     _children = new Tuple<WindowBranch, WindowBranch>(kept_child._children.Item1, kept_child._children.Item2);
 
diff --git a/Visualizations/Types/DEBUGColumns.cs b/Visualizations/Types/DEBUGColumns.cs
index b3a83dd..1671ce2 100644
--- a/Visualizations/Types/DEBUGColumns.cs
+++ b/Visualizations/Types/DEBUGColumns.cs
@@ -28,7 +28,6 @@
 using Visualizations.Management;
 using SciChart.Core.Utility.Mouse;
 using SciChart.Charting.ChartModifiers;
-using SciChart.Charting3D.Model;