2.4.17 - autogroup overlay breaks searches

[Marshall Buschman <mbuschman@cashnetusa.com>]

Hello All:

I'm running OpenLDAP 2.4.17+bdb 4.7 on Debian Lenny. I've enabled the 
autogroup overlay, and I get the following when I do an ldapsearch.
Disabling the overlay does fix the issue, but I do need the 
functionality the overlay provides.

$ ldapsearch -x -H "ldap://ldapserver"; -b dc=cashnetusa,dc=com
# extended LDIF
...
# search result
search: 2
result: 53 Server is unwilling to perform
text: operation not supported within namingContext

Relevant config:
----------------------------------------------
moduleload autogroup

database        bdb
suffix          "dc=cashnetusa,dc=com"

overlay autogroup
autogroup-attrset posixGroup memberURL member
----------------------------------------------

Help?
-Marshall Buschman