HyperV nova-compute dies at startup (missing update_available_resource method)

[Stephen Alexander]

Windows 2008 R2 Datacenter/Enterprise - following Hyper-V development http://wiki.openstack.org/HypervInstall
compute node (version 2011.2-LOCALBRANCH:LOCALREVISION)

From within c:\openstack\nova running "python bin\nova-compute" results in:

2011-03-25 14:22:14,043 AUDIT nova [-] Starting compute node (version 2011.2-LOCALBRANCH:LOCALREVISION)
2011-03-25 14:22:14,043 DEBUG nova.virt.hyperv [-] In init host from (pid=4960) init_host c:\openstack\nova\nova\virt\hyperv.py:118
2011-03-25 14:22:14,559 DEBUG nova.utils [-] backend <module 'nova.db.sqlalchemy.api' from 'c:\openstack\nova\nova\db\sqlalchemy\api.pyc'> from (pid=4960) __get_backend c:\openstack\nova\nova\utils.py:416
2011-03-25 14:22:15,339 ERROR nova.exception [-] Uncaught exception
(nova.exception): TRACE: Traceback (most recent call last):
(nova.exception): TRACE: File "c:\openstack\nova\nova\exception.py", line 120, in _wrap
(nova.exception): TRACE: return f(*args, **kw)
(nova.exception): TRACE: File "c:\openstack\nova\nova\compute\manager.py", line 793, in update_available_resource
(nova.exception): TRACE: return self.driver.update_available_resource(context, self.host)
(nova.exception): TRACE: AttributeError: 'HyperVConnection' object has no attribute 'update_available_resource'
(nova.exception): TRACE:
2011-03-25 14:22:15,339 CRITICAL nova [-] 'HyperVConnection' object has no attribute 'update_available_resource'
(nova): TRACE: Traceback (most recent call last):
(nova): TRACE: File "bin\nova-compute", line 48, in <module>
(nova): TRACE: service.serve()
(nova): TRACE: File "c:\openstack\nova\nova\service.py", line 284, in serve
(nova): TRACE: x.start()
(nova): TRACE: File "c:\openstack\nova\nova\service.py", line 96, in start
(nova): TRACE: self.manager.update_available_resource(ctxt)
(nova): TRACE: File "c:\openstack\nova\nova\exception.py", line 126, in _wrap
(nova): TRACE: raise Error(str(e))
(nova): TRACE: Error: 'HyperVConnection' object has no attribute 'update_available_resource'
(nova): TRACE: