Work at SourceForge, help us to make it a better place! We have an immediate need for a Support Technician in our San Francisco or Denver office.
Generally this happens when "zeo" is not running. You can test this by running "zeoctl start" and trying to install the zenpack again. After the zenpack is install make sure you run "zenoss restart" which should restart all the processes.
Original link: http://community.zenoss.org/message/54554?tstart=0#54554