10.10 Update Manager fails

[emtownsend]

When I attempt to run the updates that are found with Update Manager, it simply returns to the Update Manager screen as if nothing happens.
The following is what appears in my terminal view. This is a Linux guest VM (VirtualBox) running on a Windows 7 pro 64-bit host. Any help would be appreciated:

root@eric-fog:~# sudo update-manager -d
Traceback (most recent call last):
File "/usr/lib/python2.6/dist-packages/aptdaemon/defer.py", line 550, in _inline_callbacks
result = gen.send(result)
File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 993, in _run_transaction_helper
daemon = get_aptdaemon()
File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 1051, in get_aptdaemon
False),
File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 244, in get_object
follow_name_owner_changes=follow_name_owner_change s)
File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 241, in __init__
self._named_service = conn.activate_name_owner(bus_name)
File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 183, in activate_name_owner
self.start_service_by_name(bus_name)
File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 281, in start_service_by_name
'su', (bus_name, flags)))
File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
Traceback (most recent call last):
File "/usr/lib/python2.6/dist-packages/aptdaemon/defer.py", line 550, in _inline_callbacks
result = gen.send(result)
File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 993, in _run_transaction_helper
daemon = get_aptdaemon()
File "/usr/lib/python2.6/dist-packages/aptdaemon/client.py", line 1051, in get_aptdaemon
False),
File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 244, in get_object
follow_name_owner_changes=follow_name_owner_change s)
File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 241, in __init__
self._named_service = conn.activate_name_owner(bus_name)
File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 183, in activate_name_owner
self.start_service_by_name(bus_name)
File "/usr/lib/pymodules/python2.6/dbus/bus.py", line 281, in start_service_by_name
'su', (bus_name, flags)))
File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
Traceback (most recent call last):
File "/usr/lib/python2.6/dist-packages/aptdaemon/defer.py", line 548, in _inline_callbacks
result = gen.throw(result.type, result.value, result.traceback)
File "/usr/lib/python2.6/dist-packages/UpdateManager/backend/InstallBackendAptdaemon.py", line 46, in commit
defer=True)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1

[emtownsend]

Running sudo apt-get update followed by sudo apt-get upgrade did cause the installs to start, but resulted in only 6 of them being applied.
One install that NEVER has worked is the update to Kernel 2.6.35 (and it still fails to install).