Although existing groups are still listed, groups can no longer be created or activated since the upgrade to OpenSim 0.6.9 (post fixes). There appears to be an incompatibility with the XmlRpc Module. This turns out to be may not be fixable soon but, since Ocean Grid has few residents, this is not a high priority at present.

It seems as though the solution is to do with authentication and can be found here, posted by Michael Cortez.

This has been changed in the Ocean Grid setup and confirmation will be posted here on confirmation of the fix and testing confirms that the issue is resolved.

The long-standing problem with group chat is resolved so long as members in ALL roles are set as visible by the group owner or administrator. Otherwise the group chat simply won't work. This is a known bug with the XmlRpcGroups module.