--- a/UI/UserInterface.py	Wed Mar 22 19:59:45 2017 +0100
+++ b/UI/UserInterface.py	Thu Mar 23 18:58:56 2017 +0100
@@ -3930,7 +3930,7 @@
                 self.rightSidebar.setCurrentWidget(self.debugViewer)
             else:
                 self.debugViewer.show()
-            self.debugViewer.setCurrentWidget(self.shellAssembly)
+            self.debugViewer.setCurrentWidget(self.debugViewer.shellAssembly)
         else:                               # separate window
             if self.layoutType == "Toolboxes":
                 self.hToolboxDock.show()