I cant see front end and cant get in to back end as there is no log in only this error message. I have been told by my host to contact you on how to deal with getting back my backend log in screen so I can log in and apparently I have to update K2 module or something. Thank you. Please assist as I have had 5 clients already ask what is happenning to my site

*Fatal error*: Class 'K2Model' not found in
*/home/wertyqlas/public_html/plugins/system/k2/k2.php* on line

*419*

Thanks guys
byshhe

Try reinstalling K2's latest version please.