Hi pauluz,
ShowDialog is the method of CuteEditor, so if you have not editor instance in that page, you can not use this method.
Maybe you can create a simple example and show me what you need to achieve, I will try make a new solution for you.
Please send the example to Kenneth@CuteSoft.net, just send the example pages, do need the CuteSoft_Client folder.
Regards,
ken