modal window "loading" not loading in SCALD I'm working on a site using SCALD – and for some reason the modal media upload window does not work anymore. It's stuck with the status "loading…" but not going anywhere.

I first had it running like a charm – then I 'just' wanted to add multi-language support to the website adding i18n… Then when I checked again on SCALD this is all I get: 



Firebug console is showing the following two messages: 

Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help xhr.spec.whatwg.org ...A.onload=A.onreadystatechange=null;r&amp;&amp;A.parentNode&amp;&amp;r.removeChild(A)}}}r.inse‌​rtB…" (jquery.js?v=1.4.4 line 139)

and 

uncaught exception: The editor instance "edit-body-und-0-value" is already attached to the provided element.



Firebug network: "POST ajax 200 OK"

So for what I can see from other modules ajax is up and running. Checking on other forum questions here on drupal-stackexange concerning modal window problems didn't help yet – so I just hope somebody has some pointers that would direct me in some direction… ThankYou!

–EDIT-
manual upload (atom/add/image) works and also using the SCALD library incl. drag'n'drop works fine. Just opening the modal dialogue either through "add" or "edit" form the SCALD sidebar does not load.

PS: not using the jQuery update module
Fixed it: the problem was that after going through the SCALD installation process the CKEditor was activated and the plugins declared in two locations: 


under WYSIWYG Profiles
under CKEditor Profiles


This also corresponds with the error message I had in FF console:

uncaught exception: The editor instance "edit-body-und-0-value" is already attached to the provided element.


I simply deleted the WYSIWYG Profile and the problem was gone – modal window loading as it should. The detailled documentation of the process finding the error can be found over here: https://www.drupal.org/node/2454845#comment-9749453