WGM can’t create AD users?

I’ve got an AD server with an extended schema managing a lab of 10.5.8
Mac Pros.

The LDF schema extensions came from here.

MCX settings are working fine for computers, computer lists,
users and groups and I can change settings for existing users so it seams
as thought the schema is good, but I can’t create users or groups with WGM.

I keep getting eDSNoStdMappingAvailable error -14140 when I click ‘New User’
or ‘New Record’ in the inspector. Strangely, I can create a new computer list
with the inspector. Even though I get error -14140, the list shows up when I
reselect the domain as per Tim Perfitt’s on-line seminar.

Can WGM create users in AD at all?

Thanks,
–JC