When I expand All Groups, then double click on any group the security properties are displayed instead of the members within that group.
This is very strange, I have Hyena 11.2 installed, the OS is Windows server 2008 R2 64-bit. I've been using Hyena for 10+ years and I've seen this before but can't remember how to fix it.
The Hyena object manger settings for my Windows 2008 R2 domain are;
type=Windows active directory doman
ADSI path =LDAP://domain.local (the dns name of my AD domain)
everything else is blank.