file canerror breaking out of /home, /tmp, or /usr

Below is the error message on the server. I uninstalled buddy press yesterday as it wasn’t being used; I am using bbpress although I don’t know if that is part of the problem. The issue is the site, stonesled.com seems to be missing a style sheet, and I can’t log in.

Any advice, help, suggestions will be greatly appreciated.

Regards,

Tom

[01-Nov-2013 00:27:34 UTC] PHP Fatal error: Call to undefined function bp_get_friends_slug() in /home/duckpond/public_html/StoneSledFarms/wp-content/plugins/buddypress/bp-activity/bp-activity-loader.php on line 282

[02-Dec-2013 17:03:39 UTC] PHP Warning: is_writable() [function.is-writable]: open_basedir restriction in effect. File(/) is not within the allowed path(s): (/home:/tmp:/usr) in /home/duckpond/public_html/StoneSledFarms/wp-admin/includes/misc.php on line 166

The second error is the application was trying to break out of /home, /tmp or /usr and access other parts of the system, which were denied.