I always keep JCE up to date and have been successfully using JCE 2.7 versions until now.
A few days ago I updated JCE to the latest build version 2.7.13
After installing the update, clearing the Joomla cache and my web browser, the Code tab in JCE does not open and the loading circle just keeps spinning forever. The Editor and Preview tab are working 100% OK.
I then did some experiments with my hidden Test site.
I tried rolling back JCE to a slightly old version, but now all the new 2.7.* versions have the same problem with the CODE tab.
Finally I rolled JCE back to version 2.6.38 and got the CODE tab working OK again.
I also tested my website and JCE in 3 different browsers.
Code tab is not loading in all browsers.
When I tested JCE 2.7.13 in Microsoft Explorer, an error report showed this:
Regards
Derek