Thread:Project:Support desk/ Fatal exception of type MWException

Hi, i have an error in my wiki. this is a message in error_log.txt

[03-Sep-2013 23:14:25 America/Argentina/Buenos_Aires] PHP Fatal error: Invalid opcode 153/1/8. in /home/***/public_html/includes/cache/MessageCache.php on line 342]

Versions:

Mediawiki version 1.21.2

PHP 5.3.27

MySQL 5.1.70-cll

I don't know what is the problem.

Help?

Thanks.