Orca disappears in Lucid

[milton]

Dear List,
I'm an enduser and try to work with Orca in Ubuntu.
I did succesful a fresh installation of Lucid with speech. Everything
went fine and Orca 2.30.0 was doing great.
With the instruction on live.gnome.org/Orca I did the git thingfor atk,
at-spi and orca to try 2.31.1 pre.
When I start up the machine this morning Orca did not comes up.
Can you help me to solve this  please?
I can sure do a fresh install but how can I prevent to run in the same
problem?
With the script command I capture the following below. Thank you in
advance.
Regards, Milton
milton at milton-desktop: ~milton at milton-desktop:~$ orca
orca:1516): atk-bridge-WARNING **: AT_SPI_REGISTRY was not started at
session startup.

(orca:1516): atk-bridge-WARNING **: IOR not set.

(orca:1516): atk-bridge-WARNING **: Could not locate registry

** (orca:1516): WARNING **: Trying to register gtype 'WnckWindowState'
as enum when in fact it is of type 'GFlags'

** (orca:1516): WARNING **: Trying to register gtype 'WnckWindowActions'
as enum when in fact it is of type 'GFlags'

** (orca:1516): WARNING **: Trying to register gtype
'WnckWindowMoveResizeMask' as enum when in fact it is of type 'GFlags'
Contraction tables for liblouis cannot be found.
This usually means orca was built before
liblouis was installed. Contracted braille will
not be available.
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/local/lib/python2.6/dist-packages/orca/orca.py", line 1805,
in main
    init(pyatspi.Registry)
  File "/usr/local/lib/python2.6/dist-packages/orca/orca.py", line 1303,
in init
    registry.registerEventListener(_onChildrenChanged,
  File "/usr/lib/python2.6/dist-packages/pyatspi/registry.py", line 331,
in __getattribute__
    raise RuntimeError('Could not find or activate registry')
RuntimeError: Could not find or activate registry
]0;milton at milton-desk
(orca:1558): atk-bridge-WARNING **: AT_SPI_REGISTRY was not started at
session startup.

]0;milton at milton-desktop: ~milton at milton-desktop:~$ uname -a
Linux milton-desktop 2.6.32-22-generic #33-Ubuntu SMP Wed Apr 28
13:27:30 UTC 2010 i686 GNU/Linux
]0;milton at milton-desk