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[darkfower <atkisc@xxxxxxxxx>]

hi,everybody:

    when i  new create a kvm instance , error as flollow:


2011-12-24 11:45:17,937 INFO nova.virt.libvirt_conn [-] Instance
instance-00000001 spawned successfully.
2011-12-24 11:45:18,126 ERROR nova.exception [-] DB exception wrapped.
(nova.exception): TRACE: Traceback (most recent call last):
(nova.exception): TRACE:   File
"/usr/lib/python2.7/dist-packages/nova/exception.py", line 78, in _wrap
(nova.exception): TRACE:     return f(*args, **kwargs)
(nova.exception): TRACE:   File
"/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1359, in
flush
(nova.exception): TRACE:     self._flush(objects)
(nova.exception): TRACE:   File
"/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1447, in
_flush
(nova.exception): TRACE:     raise
(nova.exception): TRACE: TypeError: exceptions must be old-style classes or
derived from BaseException, not NoneType
(nova.exception): TRACE:
2011-12-24 11:45:18,140 WARNING nova.compute.manager [-] Error during
power_state sync: exceptions must be old-style classes or derived from
BaseException, not NoneType