trac-admin /opt/trac/group milestone completed project-version 2007-04-27
Command failed:
Traceback (most recent call last):
  File "/usr/local/bin/trac-admin", line 22, in <module>
    sys.exit(run(sys.argv[1:]))
  File "/usr/local/lib/python2.5/site-packages/trac/scripts/admin.py", line 1204, in run
    return admin.onecmd(command)
  File "/usr/local/lib/python2.5/site-packages/trac/scripts/admin.py", line 101, in onecmd
    print>>sys.stderr, traceback.format_tb()
TypeError: format_tb() takes at least 1 argument (0 given)