Can't add new Group in LDAP on Web Server 7 Update 1

When adding a new User or Group into a LDAP authentication database by Admin Console , I got the following message :

ADMIN3132: Error while communicating to the LDAP server: ldap://hostname:389/dc=mydc

But I can add User / Group by ldapadd command with the same binded dn and password .

Besides , group's member is not shown after I click "Search" with the '*' User ID .

LDAP Server : OpenLDAP 2.2.29 windows version

Is this a bug or I have to modify some configuration ?

Thanks !

[528 byte] By [CTStevena] at [2007-11-27 9:44:32]