Environment
Novell NetWare 6.5 Support Pack 6
Novell eDirectory 8.7.3.9 for NetWare 6.5Security Services 2.0.3
Situation
Upgraded NetWare 6.5 server from Support Pack 3 to Support
Pack 6.  
Server is abending in NPKIT.NLM when you unload and load
nldap.
Search: npkit NW NW65SP6
  Resolution
1.  Delete ldap server & ldap group objects for the
server and recreate them.  Reassociate the ldap group object
and ldap server object, and assign a certificate to the ldap server
object (typically SSL CertificateDNS by default).
2.  If the abend still occurs, reboot the server, unload
nldap and then re-extend the schema with NWCONFIG | Directory
options | Extend schema.  select the following files to
re-extend schema with: sys:\system\schema\ldap.sch and
sys:\system\schema\ldapupdt.sch.   Then reload nldap on
the server with unload nldap and load nldap.