I have found that when I have active your awesome pluguin, in my front-end content submission page, the part to attach media, don't finish the upload and stay "loading" persistently. (the link to the problem, i will mantain active the plugin if you want to see it http://www.infinitecuteness.com/post-item/
Also, I have found this error:
Fatal error: Call to undefined function is_user_logged_in() in /homez.../..../www/wp-content/themes/iLoveit/lib/php/actions.register.php on line 29
and changing the theme the same
Fatal error: Call to undefined function is_user_logged_in() in /homez.../..../www/wp-content/themes/megusta/lib/php/actions.register.php on line 29.
Deactivating the plugin, the issue is solved. I will try to find the bug, but some help will be apreciated, to document it for future users :)
Bye bye! <3