Did you verify that you have the following files on flash:
From what i was reading the 7945 should be compatible with cme 4.1. Also try configuring the mac-address of the phone first, and it may populate the phone type by itself. The phone should register if you have the above mentioned firmware in the tftp-server statements in your config.
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.