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.
the Telerik team