Not able to register the system on satellite 5.x

Issue

• Not able to register the system on satellite 5.x
• When trying to register, it throw following error:-

# rhnreg_ks  --activationkey=<activation-key> --serverUrl=<satellite.example.com> --force
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/share/rhn/up2date_client/

", line 234, in exceptionHandler
    sys.stderr.write(utf8_encode(_("An error has occurred:") + "\n"))
  File "/usr/share/rhn/up2date_client/

", line 72, in utf8_encode
    return(i18n.bstr(msg))
  File "/usr/lib/python2.6/site-packages/rhn/

", line 48, in bstr
    return str(obj.encode('utf8', errors='ignore'))
TypeError: encode() takes no keyword arguments