Trying to install the iPrint appliance. The problem is that the progress bar is just spinning over and over(when I click Finish in the iPrint Initial Configuration Wizard)

After a long while I get this error: RPC Communication error - An error occures while communicating with the server. Status code: 12002 ()

The server is online the DNS/NTP and passwords should all be correct...
Can't find any clues in the log files that I've checked.

Anyone have a clue for what to check next??

Regards Oystein