Fix crash when opening Configuration window from the menubar

src/config.qml

@@ -10,7 +10,7 @@ import QtQuick.Layouts
 import QtQuick.Dialogs
 import org.julialang
 
-ApplicationWindow {
+Window {
     id: configWindow
     title: "Configure simulation"
     width: 700
@@ -222,7 +222,7 @@ ApplicationWindow {
         // insectmodel
     }
 
-    footer: ToolBar {
+    ToolBar {
         RowLayout {
             anchors.right: parent.right
             layoutDirection: Qt.RightToLeft

src/main.qml

@@ -17,6 +17,10 @@ ApplicationWindow {
     visibility: "Maximized"
     visible: true
 
+    Loader {
+        id: loader
+    }
+
     menuBar: MenuBar {
         Menu {
             title: "&Simulation"
@@ -26,7 +30,8 @@ ApplicationWindow {
             }
             Action {
                 text: "&Configure Simulation"
-                onTriggered: { Julia.configwindow() }
+                //onTriggered: { Julia.configwindow() }
+                onTriggered: loader.source = "config.qml"
             }
             Action {
                 text: "&Load Saved State"