fedora core 4: can't get kernel source (x86_64) with up2date

[Robert Kerr]

although this worked okay with fedora core 3, it fails with core 4:

issuing:
    [root at localhost ~]# up2date --get-source kernel

obtains:
    Fetching all package list for channel: updates-released...
    An error has occurred:
    exceptions.TypeError
    See /var/log/up2date for more information

issuing:
    [root at localhost ~]# gedit /var/log/up2date

obtains:
[Wed Jun 15 04:29:17 2005] up2date allAvailablePackageList from network
[Wed Jun 15 04:29:17 2005] up2date   File "/usr/sbin/up2date", line 
1265, in ?
    sys.exit(main() or 0)
   File "/usr/sbin/up2date", line 711, in main
    return getPackages(pkgNames, source=1)
   File "/usr/sbin/up2date", line 995, in getPackages
    progressCallback = wrapperUtils.percent)
   File "/usr/share/rhn/up2date_client/rhnPackageInfo.py", line 279, in 
getAllAvailableAllArchPackageList
    package_list = allAvailablePackageList(
   File "/usr/share/rhn/up2date_client/rhnPackageInfo.py", line 218, in 
allAvailablePackageList
    progressCallback = progressCallback )
   File "/usr/share/rhn/up2date_client/rpcServer.py", line 316, in doCall
    ret = apply(method, args, kwargs)
   File "/usr/share/rhn/up2date_client/repoDirector.py", line 24, in 
listAllPackages
    return self.handlers[channel['type']].listAllPackages(channel, 
msgCallback, progressCallback)
   File "/usr/share/rhn/up2date_client/rpmSource.py", line 241, in 
listAllPackages
    msgCallback, progressCallback)

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Anyone know what this means?