Description
Installing CMServer as a Windows Service has failed.

Solution
This is usually to do with having insufficient permissions to perform the installation. Installing a Service can only be done by an Administrator.

On Vista and Windows 7, being logged in using an Administrator account is not enough. You should start a new command-prompt by finding a Command-Prompt shortcut, right clicking on it, and selecting "Run as Administrator". Now you should be able to run
CMServer /s
and install the Service successfully.