sasa@beast:~$ trytond
[Tue Jan 10 21:29:41 2012] INFO:server:using default configuration
[Tue Jan 10 21:29:41 2012] INFO:server:initialising distributed objects services
[Tue Jan 10 21:29:41 2012] DEBUG:psycopg2:installed. Logging using Python logging module
[Tue Jan 10 21:29:41 2012] INFO:modules:ir:registering classes
[Tue Jan 10 21:29:41 2012] INFO:modules:res:registering classes
[Tue Jan 10 21:29:41 2012] INFO:modules:product:registering classes
[Tue Jan 10 21:29:41 2012] INFO:modules:webdav:registering classes
[Tue Jan 10 21:29:41 2012] INFO:modules:workflow:registering classes
[Tue Jan 10 21:29:41 2012] INFO:modules:country:registering classes
[Tue Jan 10 21:29:41 2012] INFO:modules:currency:registering classes
[Tue Jan 10 21:29:41 2012] INFO:modules:test:registering classes
[Tue Jan 10 21:29:41 2012] INFO:modules:party:registering classes
Traceback (most recent call last):
  File "/usr/bin/trytond", line 104, in <module>
    trytond.server.TrytonServer(options).run()
  File "/usr/lib64/python2.6/site-packages/trytond/server.py", line 102, in run
    Pool.start()
  File "/usr/lib64/python2.6/site-packages/trytond/pool.py", line 71, in start
    register_classes(reload_p=reload_p)
  File "/usr/lib64/python2.6/site-packages/trytond/modules/__init__.py", line 363, in register_classes
    pathname, description)
  File "/usr/lib64/python2.6/site-packages/trytond/modules/party/__init__.py", line 5, in <module>
    from .party import *
  File "/usr/lib64/python2.6/site-packages/trytond/modules/party/party.py", line 5, in <module>
    from trytond.wizard import Wizard, StateTransition, StateView, Button
ImportError: cannot import name StateTransition
sasa@beast:~$