MenuManager Cache issues

[spectre013]

We all of a sudden started getting an error that reads

Code: Select all

PHP Fatal error:  Call to a member function on a non-object in /var/www/vhosts/domain.com/httpdocs/modules/MenuManager/MenuManager.module.php on line 165

if I clean out the cache the CMS will work for 3-4 pages loads then start throwing this error.

Any Ideas.

edit: changed title, also admin area works just fine, infact the site works fine as long as the menumanager is not enabled.