You might also look at the audit.log file which the Jabber Client updates as it tries to sign in. There may be clues there as to what it is trying to sign in to and what it is getting back. On a Win7 machine it can be found in the c:\Users\(local user)\AppData\Local\Cisco\JabberVideo\Logs folder
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.