Yes you’re right, it was my mistake, sorry! I still had an old version of the file.
This time I have replaced the custom-theme.js (http://momawork.es/momaweb/wp-content/themes/aside/js/custom.theme.js) for the one you have given me and unfortunately we still have the “page loading” problem. 🙁
Just so you know, custom-theme.js was the only field we customized.
Thank you for your help