spacewalk-create-channel fails with "Channel name must begin with a letter and may contain only lowercase letters, hyphens ('-'), periods ('.'), underscores ('_'), numerals, spaces and forward slashes ('/')."

Issue

• Error trying to update to a specific version of Red Hat.
• spacewalk-create-channel fails with an error. Below is the complete output:

\# spacewalk-create-channel --user=satadmin --server=localhost --version=5 --update=u5 --release=Server --arch=x86\_64 -destChannel=testnew-rhel5u5
Password:
You have not specified a source channel, we will try to determine it from inputs
Trying with source channel: rhel-x86_64-server-5
Creating channel, estchannel=testnew-rhel5u5, with arch x86_64
Traceback (most recent call last):
  File "/usr/bin/spacewalk-create-channel", line 443, in ?
    main()
  File "/usr/bin/spacewalk-create-channel", line 181, in main
    populate(client, auth, srcChanLabel, newChannelLabel, newChannelName, filename, parent, clear, skiplist=skiplist)
  File "/usr/bin/spacewalk-create-channel", line 207, in populate
    client.channel.software.create(auth, newChannel, newChannelName, newChannel, getArchLabel(arch_label, client, auth), parent)
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1096, in \__call\__
    return self.__send(self.__name, args)
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1383, in __request
    verbose=self.__verbose
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1147, in request
    return self._parse_response(h.getfile(), sock)
  File "/usr/lib64/python2.4/xmlrpclib.py", line 1286, in _parse_response
    return u.close()
  File "/usr/lib64/python2.4/xmlrpclib.py", line 744, in close
    raise Fault(**self._stack[0])
xmlrpclib.Fault\: Fault 1200: "redstone.xmlrpc.XmlRpcFault: Channel name must begin with a letter and may contain only lowercase letters, hyphens ('-'), periods ('.'), underscores ('_'), numerals, spaces and forward slashes ('/')."