I'm re-posting the issue from evildmp's fork because I'm having the same problem:
var qs = jQuery.query.load(window.parent.location.search);
Uncaught TypeError: Cannot call method 'load' of undefined
Examining this, at this point in execution jQuery is defined, but jQuery.load is undefined. Some other code loaded by django-cms is obliterating jQuery.
This is probably coming from line 8 of cms/js/plugins/cms.setup.js:
var jQuery = (django) ? django.jQuery : window.jQuery || undefined;
which can be fixed in the same way.
I can upload a diff, but it is fixed very well just by wrapping the $(document).ready call in editor_widget with:
And wrapping all the code in wymeditor.semantic.js with the same thing.