FG101f User cannot be added to User Groups

I have a 101f with 7.2.6. User cannot be added to user groups.

Under User and Authentication, User Definition

I select a user that is an LDAP user,

I select the User Group button and the list of available user groups pops up.  I select a group      from the list and when I save it I get an entry not found error.

if I do the opposite from the groups:

Under User and Authentication, User Groups

I select the same user group I was selecting above and edit.  there is no option to add users.  If I jump out to the CLI and manually try to add the user I get:

entry not found in datasource

value parse error before 'xxxxxx'
Command fail. Return code -3

The listed LDAP servers are connected successfully and can authenticate users through the FG interface under Under User and Authentication, LDAP Servers.

what did I miss?