We are using goprint to manage our printers and I am trying to create a network printer policy and assign it to a windows 7 workstation. The workstation fails with the following error.

[ERROR] [09/01/2011 15:10:57.657] [1352] [ZenworksWindowsService] [26] [User] [printer policy] [POLICYHANDLERS.PrinterPolicy.LocalPrinterAddFailed] [Failed to add printer http://IP:631/printers/it4100/.printer .] [The specified port is unknown.] [null]

What port is it referring to or is it something else ?