Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/AppInstall/AppInstall.py", line 758, in on_install_toggle
    if not self._ensureInArchive(item):
  File "/usr/lib/python2.5/site-packages/AppInstall/AppInstall.py", line 559, in _ensureInArchive
    if not self.addChannel(item):
  File "/usr/lib/python2.5/site-packages/AppInstall/AppInstall.py", line 825, in addChannel
    for dep in self.distro.get_comp_dependencies(item.component):
TypeError: 'NoneType' object is not iterable