Menu Clip crashing site(s)

[محروم.كوم]

I have a couple of sites - one production one in development that both crash when setting a menu to "clip"
The php error is:
Code:
PHP Fatal error: Class 'Menu_Item' not found in /var/www/vhosts/coachjohn.org/httpdocs/phpws152/mod/menu/class/Menu.php on line 105, referer: http://www.coachjohn.org/phpws152/index.php?module=menu

It is the same error code for both sites, Menu version 1.60 (1.6.2 version of phpwebsite) and Menu ver. 1.6.1 (1.6.3 phpwebsite). Help - really a show stopper on one site. __DEFINE_LIKE_SHARE__