First, thanks for taking the time to answer me. No, I'm on the front-end of the site. On the software side:
wordpress' default jquery 1.10.2 loaded
and a bunch of plugins.
The full log in inspector is:
Uncaught TypeError: Cannot call method 'appendChild' of null (index):472
(anonymous function) (index):493
I can see minqueue scripts in those lines but nothing else happens. I mean I enabled the minification of styles putting in the handlers "style, formidablepro" to see the plugin in action. So far all I get is the error above.
I also tried installing the plugin on the live site (server config different from MAMP) with the same results.