Also getting this error. Makes the plugin functionally broken because there’s no way to update any events 🙁
I have the same problem. TinyMCE “white screens” and the console catches a 404 error while trying to load “wp-admin/undefined/langs/en.js?ver=358-23156”
I have this same problem in the Adminimize plugin.
I second dawg123’s request – it’d be great to put the upload button between the comment box and submit button.