Extensions Broken in 3.1.4
From Joomla! Documentation
Revision as of 12:14, 27 July 2013 by Elin
Some extensions that worked in 3.1.1 give a 500 error in version 3.1.4 . If you have this problem you can install this hotfix just as you would a normal extension.
Extension Manager => Install
This will be fixed in 3.1.5.
For any other extension related issues, please contact the extension developer for information.