Last week a minor update to the Office Live Meeting 2007 Console was released. The fix addressed two issues:
2482428 (http://support.microsoft.com/kb/2482428/ ) You cannot create or join a Live Meeting conference from an external network by using a Live Meeting 2007 client
2491589 (http://support.microsoft.com/kb/2491589/ ) A Lync Online user in domain A cannot join a Live Meeting conference hosted in an OCS 2007 R2 pool in domain B when the two domains are not federated
The update takes the Windows-based version of the Live Meeting 2007 client to version 8.0.6362.200.