Installing and upgrading help

Hi,
I just upgraded my server to comply with Moodle 2.7.  I installed the latest versions of PHP and MySQL.

Now Cron is reporting the following problem:

Zend OPcache requires Zend Engine API version 220090626.
The Zend Engine API version 220100525 which is installed, is newer.
Contact Zend Technologies at http://www.zend.com/ for a later version of Zend OPcache.

I went to zend.com but I didn't see a download for Zend OPcache.

Any suggestions?

It appears that my updated server now has a newer version of the Zend Engine API than Moodle is using.

How can I fix this?

Thanks for the help.
Clarence Prudhoe