diff -r c89fc366bebd -r 0ffb41625592 canfestival/NetworkEditor.py
--- a/canfestival/NetworkEditor.py	Thu Sep 02 21:36:29 2021 +0200
+++ b/canfestival/NetworkEditor.py	Thu Sep 02 22:18:14 2021 +0200
@@ -68,7 +68,7 @@
         main_sizer.AddGrowableCol(0)
         main_sizer.AddGrowableRow(0)
 
-        main_sizer.AddWindow(self.NetworkNodes, 0, border=5, flag=wx.GROW | wx.ALL)
+        main_sizer.Add(self.NetworkNodes, 0, border=5, flag=wx.GROW | wx.ALL)
 
         self.NetworkEditor.SetSizer(main_sizer)