Open Source Document Management System | OpenKM

I am using OpenKM 6.3.12 CE. I have it configured using ldap (active directory). Users and groups are imported fine. No problem with logins or security. The issue I have is that while I can send email to users, I cannot send to roles. If I try to send an email to a role exclusively, the Accept button does not become enabled when I move the role to the right pane as it does when I add a user.

When viewing the user list, it shows the email addresses. However, when I filter the user list on a role, the email column is blank. I don't know if this is the issue.

Thanks,
Keith