Joomla! Documentation™

Some users report that they receive the following error when attempting to create new content (of any type).

Errors Reported

HTTP Error 500 (Internal Server Error): An unexpected condition was 
encountered while the server was attempting to fulfill the request.

or with maximum reporting on

Fatal error: Invalid opcode 153/1/8. in 
/var/.../libraries/joomla/table/observer/tags.php on line 159

Versions affected

General Information

What is the cause

This appears to be caused by a bug in eAccelerator.

How to fix

Either update to the current Joomla! version or change your caching method to a different option.

Warning!