Hello Rui,
Thank you for this clarification.
Now I think I understand the issue. Our latest release of
Visual Style Builder is not compatible with some of the old versions. Could you please open a support ticket and send us your theme file? We will look into it and we will assist you converting it to the latest version of our
Visual Style Builder tool. Please, do not forget to specify the version for which the theme was created. Thank you for your understanding.
I am looking forward to your theme.
Kind regards,
Jack
the Telerik team