Replace MessageBox with NoticeDialog

PixiEditor/Models/IO/Exporter.cs

@@ -112,7 +112,7 @@ namespace PixiEditor.Models.IO
             }
             catch (Exception err)
             {
-                MessageBox.Show(err.ToString(), "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                NoticeDialog.Show(err.ToString(), "Error");
             }
         }
     }

PixiEditor/ViewModels/SubViewModels/Main/UpdateViewModel.cs

@@ -127,11 +127,9 @@ namespace PixiEditor.ViewModels.SubViewModels.Main
             }
             catch (Win32Exception)
             {
-                MessageBox.Show(
+                NoticeDialog.Show(
                     "Couldn't update without administrator rights.",
-                    "Insufficient permissions",
-                    MessageBoxButton.OK,
-                    MessageBoxImage.Error);
+                    "Insufficient permissions");
             }
         }