Can you fix this php error in joomla website

[topdomain]

in the control panel of my website (a joomla script site) when i try to go into menu manager i am getting this error

Fatal error: Undefined class name 'toolbar_menumanager' in /home/photofun/public_html/administrator/components/com_menumanager/toolbar.menumanager.php on line 41

i have been told that this is a very easy to fix by someone who has a php experience

i will pay you some money to fix this error - please pm .. thanks

 

[Host47]

re upload all files, overwriting existing this will fix the problem