Thanks Ray - although I think the issue might be confused as I downloaded CKeditor separate to any WA stuff.
So there is just the reference to:
<script src="../ckeditor/ckeditor.js"></script>
And this code after each text area:
<script>
CKEDITOR.replace( 'details' );
</script>
So I don't see the line:
$CKEditor->editor(
I did have a feeling CKeditor used to be built into some WA stuff, but couldn't see it, so found it on their site.
I did use this one years ago on another site, with CKeditor / WA, and dug out an old page.
Continued below...