+ if (tileset.IsNew && useNewSyntax.Active) {
+ MessageDialog dialog = new MessageDialog(MainWindow, DialogFlags.Modal | DialogFlags.DestroyWithParent, MessageType.Error, ButtonsType.Ok,
+ "Sorry, the file you are editing is too new and 0.3.x syntax is not supported yet.");
+ dialog.Run();
+ dialog.Destroy();
+ } else {