narval #2054504 Crash on install [open]

When installing narval-bot I get a nice colorfull crash

 Setting up narval-bot (3.0.6-1) ...
 Starting Narval bot server: narvalINFO: loading extra module apycot
 ERROR: cant import apycot
 Traceback (most recent call last):
   File "/usr/lib/python2.6/dist-packages/narvalbot/__init__.py", line 165, in _load_plugin
   mod = __import__(module)
 File "/var/lib/narval/plugins/apycot.py", line 8, in <module>
   import apycotlib
 ImportError: No module named apycotlib
 INFO: loading extra module basic
 DEBUG: action <function act_noop at 0x25021b8> registered with id basic.noop
 DEBUG: action <function act_mirror at 0x25e8578> registered with id basic.mirror
 DEBUG: action <function act_move at 0x25e86e0> registered with id basic.move
 DEBUG: action <function act_copy at 0x25e8c08> registered with id basic.copy
 DEBUG: module file imported: /var/lib/narval/plugins/basic.pyc
 Traceback (most recent call last):
 File "/usr/bin/narval", line 13, in <module>
   main.run(sys.argv[1:])
 File "/usr/lib/pymodules/python2.6/logilab/common/clcommands.py", line 134, in run
   sys.exit(command.main_run(args, rcfile))
 File "/usr/lib/pymodules/python2.6/logilab/common/clcommands.py", line 263, in main_run
   self.run(args)
 File "/usr/lib/python2.6/dist-packages/narvalbot/main.py", line 60, in run
   npm.start(args, self.config.debug, self.config.force, self.config.pid_file)
 File "/usr/lib/python2.6/dist-packages/narvalbot/server.py", line 112, in start
   nshost=config['pyro-ns-host'])
 File "/usr/lib/pymodules/python2.6/logilab/common/pyro_ext.py", line 94, in register_object
   daemon = _get_daemon(daemonhost)
 File "/usr/lib/pymodules/python2.6/logilab/common/pyro_ext.py", line 73, in _get_daemon
   daemon = core.Daemon(host=host, port=port)
 File "/usr/lib/pymodules/python2.6/Pyro/core.py", line 581, in __init__
   raise DaemonError('Couldn\'t start Pyro daemon: ' +str(errormsg))
 Pyro.errors.DaemonError: Couldn't start Pyro daemon: [Errno 99] Cannot assign requested address
failed!
prioritynormal
typebug
done in<not specified>
closed by<not specified>