Your PHP installation has open_basedir enabled. Drupal currently requires the open_basedir option to be turned off. See the <a href="http://www.php.net/manual/en/ini.core.php#ini.open-basedir">PHP manual</a> for details of how to do this. This issue is currently <a href="https://drupal.org/node/2110863">under discussion at drupal.org</a>.