Error when testing LDAP configuration - please help

Hi Guys,

I'm trying to configure an LDAP installation on my Drupal site and when running a test, I get the following error:

Warning: Invalid argument supplied for foreach() in ldap_pear_escape_filter_value() (line 230 of /var/www/site_caseygrammar.vic.edu.au/intranet/modules/ldap/ldap_servers/ldap_servers.functions.inc).
Warning: Invalid argument supplied for foreach() in ldap_pear_escape_filter_value() (line 230 of /var/www/site_caseygrammar.vic.edu.au/intranet/modules/ldap/ldap_servers/ldap_servers.functions.inc).

Any help would be greatly appreciated.

Regards,

Simon