Php Fatal Error in 2.5.15
From Joomla! Documentation
Revision as of 16:12, 6 November 2013 by Wilsonge
A fatal error has been found in Joomla 2.5.15, when used with PHP 5.2.
What is the cause
This is because you now must also load the legacy and cms libraries in order to work with JTable.
How to fix
If you haven't upgraded already, please wait as 2.5.16 will be released soon to fix this. Else apply the fix in this patch: https://github.com/joomla/joomla-cms/commit/8e43c9fc838c22df01cae134f85618dde9518cbb