I am using a TwentyTwelve child theme with minimal alterations having -with the same issue. (same child theme on a different site does NOT have the same problem) so I am guessing it is a plugin clash.
Plugins installed:
Akismet
bbPress
BuddyPress
BuddyPress Docs
BuddyPress Group Email Subscription
BulletProof Security
CiviCRM
CiviMember Role Synchronize
Custom sidebars
Drop Shadow Boxes
Exclude Pages from Navigation
Jetpack by WordPress.com
Piklist
Q and A FAQ and Knowledge Base for WordPress
Remove Dashboard Access
Role Scoper
SI CAPTCHA Anti-Spam
Simple Local Avatars
Theme My Login
ThreeWP Activity Monitor
UK Cookie Consent
User Role Editor
Visual Form Builder
W3 Total Cache
WordPress Helpers
WordPress SEO
Wysija Newsletters
When I go to create new Doc from frontend the text box is not visible, attachments button does not work and new doc will not save at all.
My error is the same as Aaran’s but you will also see no visual text editor loading either.
https://s28.postimg.org/6osxxg38t/bbdocs_FAIL2.png