mod_edir 1.0.12 & remote home directories

Hello all,
I have a strange problem with mod_edir v1.0.12 on
NW65sp5 with NWLibCh and Apache 2.0.59.
I want to implement the home directory feature
of mod_edir. I have a central web server for this
purpose and all user have their home directories
remote to this central web server.
The appropriate parts of the httpd.conf are as
follows:
[...]
<IfModule !util_ldap.c>
  LoadModule ldap_module modules/utilldap.nlm
</IfModule>
<IfModule util_ldap.c>
  <IfModule !mod_auth_ldap.c>
    LoadModule auth_ldap_module modules/authldap.nlm
  </IfModule>
  <Location /ldap-status>
    SetHandler ldap-status
  </Location>
  <IfModule !mod_edir.c>
    LoadModule edir_module modules/mod_edir.nlm
  </IfModule>
  eDirShowComponent On
</IfModule>

<IfModule mod_edir.c>
eDirServer ldapserver
hDirUserSubDirectory webdir
hDirAllowEnabledAccountsOnly On
RemoteDirEnabled On
HomeDirEnabled On
hDirSearchContexts basecontext
hDirCheckAliases Off
</IfModule>
[...]

But it won't work. The apache's errorlog message is:
could not find home directory for user xyz

On LDAP debug screen I see that the object is found and
the rights things are sent back to the apache server.

So, what goes wrong here?

NB: If I use mod_edir v1.0.8 everything works like a charm!

Thanks for your help!

Adio,
Gerd