My php installation can't write to the Save Session Path - how do I fix it?

If you have access to your apache config file, look for the line: php_admin_value open_basedir "/blah/blah"
 
You can add the value for the php save session path as follows: php_admin_value open_basedir "/blah/blah:/save/session/path"

If you do not have access, have your application write session information to a directory you have access to - create one in your home directory perhaps.

Better Yet: comment out the whole line (php_admin_value) in your apache config file, so there's no basedir set.