This message appears when no device association is found for a user. In order to resolve this issue, associate a device/phone with the users in the Global Directory of the Cisco CallManager Administration page. In order to do this, complete these steps:
Choose the user configuration page under Global Directory from the Cisco CallManager Administration page.
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.