unable to update

Hi

There are a few major issues on a few links on my site, specifically these links are not working

http://www.blatantlyblunt.com/index.php/shop.html
http://www.blatantlyblunt.com/index.php/Template-articles/services.html
http://www.blatantlyblunt.com/index.php/tv-video.html

getting this error message
Fatal error: Class 'K2Table' not found in /home/blatantl/public_html/administrator/components/com_k2/tables/k2category.php on line 14

I tried to update the site via this link and it won't let me
http://blatantlyblunt.com/administrator/index.php?option=com_installer&view=update

also this link doesnt work -
http://blatantlyblunt.com/administrator/index.php?option=com_easyblog

giving me this error message - Fatal error: __clone method called on non-object in /home/blatantl/public_html/administrator/components/com_easyblog/includes/post/post.php on line 509

please help!!!

thank you - much appreciated!!