I just installed openstack essex to ubuntu 12.04 overall just running functionally, even i can access my dashboard on my browser. but when i make the order from terminal with nova, it always appear the same message ERROR: printt

so, i try nova --debug list it comes

root@and:/home/and# nova --debug list
connect: (localhost, 5000)
send: 'POST /v2.0/tokens HTTP/1.1\r\nHost: localhost:5000\r\nContent-Length: 104\r\ncontent-type: application/json\r\naccept-encoding: gzip, deflate\r\naccept: application/json\r\nuser-agent: python-novaclient\r\n\r\n{"auth": {"tenantName": "admin", "passwordCredentials": {"username": "admin", "password": "openstack"}}}'
reply: 'HTTP/1.1 200 OK\r\n'
header: Vary: X-Auth-Token
header: Content-Type: application/json
header: Content-Length: 5102
header: Date: Tue, 24 Dec 2013 05:10:15 GMT
connect: (localhost, 8774)
send: u'GET /v1.1/24b6280420da45139e959b9c36d8a323/servers/detail HTTP/1.1\r\nHost: localhost:8774\r\nx-auth-project-id: admin\r\nx-auth-token: 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-9vz4eb0CSzNoEVAWi0nhUFnBADweWJTPaAt30idZZ-mj8B909VocHxK2Ju1BcFgSTNA5ERzAU7is+AeO8oiwpLWb4=\r\naccept-encoding: gzip, deflate\r\naccept: application/json\r\nuser-agent: python-novaclient\r\n\r\n'
reply: 'HTTP/1.1 200 OK\r\n'
header: X-Compute-Request-Id: req-7450d8c7-0e95-4a44-b6ec-f68ccb92e1db
header: Content-Type: application/json
header: Content-Length: 1392
header: Date: Tue, 24 Dec 2013 05:10:15 GMT
DEBUG (shell:416) printt
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/novaclient/shell.py", line 413, in main
    OpenStackComputeShell().main(sys.argv[1:])
  File "/usr/lib/python2.7/dist-packages/novaclient/shell.py", line 364, in main
    args.func(self.cs, args)
  File "/usr/lib/python2.7/dist-packages/novaclient/v1_1/shell.py", line 521, in do_list
    formatters)
  File "/usr/lib/python2.7/dist-packages/novaclient/utils.py", line 145, in print_list
    pt.printt(sortby=fields[0])
  File "/usr/lib/python2.7/dist-packages/prettytable.py", line 167, in __getattr__
    raise AttributeError(name)
AttributeError: printt
ERROR: printt

what should i do? sorry for my bad english,