We love x-theme.
Our client needs a custom element.
We found instructions here: https://theme.co/apex/forum/t/cornerstone-content-builder-custom-elements/217
However, creating the definition, does not adds the custom element to the library, as the instructions says: _
"Each element needs a definition.php file, which should contain a single class named after your element....
...This code is enough for Cornerstone to add your element to the Element Library."
We've created the definition under : plugins/cornerstone/includes/elements/classic/my_custom_element/definition.php
Then, we downloaded the [sample extension](Sample Extension577) and copied one of the example elements (my-sortable-element) under "plugins/cornerstone/includes/elements/classic/"
just to see if that worked.. but neither.. we go the Cornerstone page builder, clic on "Elements", search for it, and it wont appear.
Any suggestions where might be the issue ?