Ok

PixiEditor/Views/Dialogs/NoticePopup.xaml

@@ -32,7 +32,7 @@
         <StackPanel Grid.Row="2" Orientation="Horizontal" VerticalAlignment="Bottom" HorizontalAlignment="Center"
                     Margin="0,0,10,10">
             <Button Height="30" Width="60"
-                    Click="Close"
+                    Click="OkButton_Close"
                     Style="{StaticResource DarkRoundButton}" Content="Ok">
             </Button>
         </StackPanel>

PixiEditor/Views/Dialogs/NoticePopup.xaml.cs

@@ -33,7 +33,7 @@ namespace PixiEditor.Views.Dialogs
             InitializeComponent();
         }
 
-        private void Close(object sender, RoutedEventArgs e)
+        private void OkButton_Close(object sender, RoutedEventArgs e)
         {
             Close();
         }