DeliveryAdminWindow: Small quality of life fixes

Elwig/App.xaml.cs

@@ -84,8 +84,8 @@ namespace Elwig {
 
             var list = new List<IScale>();
             foreach (var s in Config.Scales) {
+                var id = s[0];
                 try {
-                    var id = s[0];
                     var type = s[1]?.ToLower();
                     var model = s[2];
                     var cnx = s[3];
@@ -99,6 +99,7 @@ namespace Elwig {
                         throw new ArgumentException($"Invalid scale type: \"{type}\"");
                     }
                 } catch (Exception e) {
+                    list.Add(new InvalidScale(id));
                     MessageBox.Show($"Unable to create scale {s[0]}:\n\n{e.Message}", "Scale Error", MessageBoxButton.OK, MessageBoxImage.Error);
                 }
             }