[Spacewalk-list] Cant register a client

[Hugo Doria]

Hi guys,

I am new on this list and on spacewalk. I just finished my instalation
following this:
https://fedorahosted.org/spacewalk/wiki/HowToInstall

After the installation i created a new channel (for centos i686) and a
activation key on System -> Activation keys. Everything was fine until
here until i try to register a client.

I used the following command on a CentOS 5 client:

rhnreg_ks --serverUrl=http://192.x.x.x/XMLRPC
--activationkey=1-xxxxxxxxxxxxxxxxxxxxxxx

Unfortunately it did not worked and i am getting this error:

An error has occurred:
Not Found
See /var/log/up2date for more information

I can ping the server. Also, the following packages are installed:
rhn-setup and yum-rhn-plugin

/var/log/up2date content:
[Fri Mar 20 13:15:34 2009] up2date A protocol error occurred: Not
Found , attempt #1,
[Fri Mar 20 13:15:39 2009] up2date A protocol error occurred: Not
Found , attempt #2,
[Fri Mar 20 13:15:44 2009] up2date A protocol error occurred: Not
Found , attempt #3,
[Fri Mar 20 13:15:49 2009] up2date A protocol error occurred: Not
Found , attempt #4,
[Fri Mar 20 13:15:54 2009] up2date A protocol error occurred: Not
Found , attempt #5,
[Fri Mar 20 13:15:54 2009] up2date Error communicating with server.
The message was:
Not Found
[Fri Mar 20 13:15:54 2009] up2date
Traceback (most recent call last):
  File "/usr/sbin/rhnreg_ks", line 267, in ?
    cli.run()
  File "/usr/share/rhn/up2date_client/rhncli.py", line 65, in run
    sys.exit(self.main() or 0)
  File "/usr/sbin/rhnreg_ks", line 88, in main
    rhnreg.getCaps()
  File "/usr/share/rhn/up2date_client/rhnreg.py", line 324, in getCaps
    s.capabilities.validate()
  File "/usr/share/rhn/up2date_client/rhnserver.py", line 154, in
__get_capabilities
    self.registration.welcome_message()
  File "/usr/share/rhn/up2date_client/rhnserver.py", line 50, in __call__
    return rpcServer.doCall(method, *args, **kwargs)
  File "/usr/share/rhn/up2date_client/rpcServer.py", line 263, in doCall
    raise up2dateErrors.CommunicationError(e.errmsg)
up2date_client.up2dateErrors.CommunicationError: Error communicating
with server. The message was:
Not Found

I am behind a proxy and i already tried to set the proxy variables,
but it did not worked too.

Any tips?

-- Hugo