php fatal error - googler crawler

My error log:

[Sun Jan 22 19:32:46 2012] [error] [client 66.249.68.3] PHP Fatal error:  Call to a member function getContainerEntity() on a non-object in /srv/www/climbnrun.com/public/mod/pages/pages/pages/history.php on line 15
[Sun Jan 22 19:40:08 2012] [error] [client 66.249.68.3] PHP Fatal error:  Call to a member function getGUID() on a non-object in /srv/www/climbnrun.com/public/mod/tidypics/pages/viewalbum.php on line 30
[Sun Jan 22 19:40:09 2012] [error] [client 66.249.68.3] PHP Fatal error:  Call to a member function getGUID() on a non-object in /srv/www/climbnrun.com/public/mod/tidypics/pages/viewalbum.php on line 30

IP address 66.249.68.3 -> Google crawl-66-249-68-3.googlebot.com

Can anyone help me interpret this fatal error?

Thanks