First error:

[root@netserv cobbler]# cobbler sync
Copying /var/lib/cobbler/elilo-3.6-ia64.efi -> /tftpboot/elilo-3.6-ia64.efi
Traceback (most recent call last):
  File "/usr/lib/python2.3/site-packages/cobbler/cobbler.py", line 743, in main
    BootCLI(sys.argv).run()
  File "/usr/lib/python2.3/site-packages/cobbler/cobbler.py", line 118, in run
    self.relay_args(self.args[1:], self.commands['toplevel'])
  File "/usr/lib/python2.3/site-packages/cobbler/cobbler.py", line 553, in relay_args
    commands[args[0]](args[1:])
  File "/usr/lib/python2.3/site-packages/cobbler/cobbler.py", line 575, in sync
    self.api.sync()
  File "/usr/lib/python2.3/site-packages/cobbler/api.py", line 156, in sync
    return sync.run()
  File "/usr/lib/python2.3/site-packages/cobbler/action_sync.py", line 66, in run
    self.copy_bootloaders()
  File "/usr/lib/python2.3/site-packages/cobbler/action_sync.py", line 121, in copy_bootloaders
    self.copyfile(path, destpath)
  File "/usr/lib/python2.3/site-packages/cobbler/action_sync.py", line 786, in copyfile
    print _("copy: %(src)s -> %(dst)s") % { "src" : src, "dest" : dst }
KeyError: 'dst'

Seems to be solved by changing "dest" to "dst" on line 786. This produces:

[root@netserv cobbler]# cobbler sync
copy: /var/lib/cobbler/elilo-3.6-ia64.efi -> /tftpboot/elilo-3.6-ia64.efi
copy: /usr/lib/syslinux/pxelinux.0 -> /tftpboot/pxelinux.0
Traceback (most recent call last):
  File "/usr/lib/python2.3/site-packages/cobbler/cobbler.py", line 743, in main
    BootCLI(sys.argv).run()
  File "/usr/lib/python2.3/site-packages/cobbler/cobbler.py", line 118, in run
    self.relay_args(self.args[1:], self.commands['toplevel'])
  File "/usr/lib/python2.3/site-packages/cobbler/cobbler.py", line 553, in relay_args
    commands[args[0]](args[1:])
  File "/usr/lib/python2.3/site-packages/cobbler/cobbler.py", line 575, in sync
    self.api.sync()
  File "/usr/lib/python2.3/site-packages/cobbler/api.py", line 156, in sync
    return sync.run()
  File "/usr/lib/python2.3/site-packages/cobbler/action_sync.py", line 66, in run
    self.copy_bootloaders()
  File "/usr/lib/python2.3/site-packages/cobbler/action_sync.py", line 120, in copy_bootloaders
    self.copyfile(path, destpath)
  File "/usr/lib/python2.3/site-packages/cobbler/action_sync.py", line 789, in copyfile
    raise CX(_("Error copying %(src) to %(dst)") % { "src" : src, "dst" : dst})
ValueError: unsupported format character 't' (0x74) at index 21