[windows] cbtransfer gives error "could not read _local/vbstate" with couchstore-files as source

cbtransfer gives error with couchstore-files as source.

Steps to reproduce

1. Install 2.0.1-185-rel windows 64bit build
2. Create default bucket and load 10k items.
3. Run the cbtransfer command and it gives error:

C:\Program Files\Couchbase\Server\bin>cbtransfer -v -v -v "couchstore-files://C:
\Program Files\Couchbase\Server\var\lib\couchbase\data" C:\test -b default
2013-04-05 13:03:24,772: mt cbtransfer...
2013-04-05 13:03:24,772: mt source : couchstore-files://C:\Program Files\Couchb
ase\Server\var\lib\couchbase\data
2013-04-05 13:03:24,772: mt sink : C:\test
2013-04-05 13:03:24,772: mt opts : {'username': None, 'source_vbucket_state':
'active', 'destination_vbucket_state': 'active', 'verbose': 3, 'dry_run': False
, 'extra':

{'max_retry': 10.0, 'rehash': 0.0, 'nmv_retry': 1.0, 'cbb_max_mb': 10 0000.0, 'try_xwm': 1.0, 'batch_max_bytes': 400000.0, 'report_full': 2000.0, 'bat ch_max_size': 1000.0, 'report': 5.0, 'recv_min_bytes': 4096.0}

, 'single_node': F
alse, 'bucket_destination': None, 'destination_operation': None, 'threads': 4, '
key': None, 'password': None, 'id': None, 'bucket_source': 'default'}
2013-04-05 13:03:24,772: mt source_class: <class 'pump_sfd.SFDSource'>

error: could not read _local/vbstate from: C:\Program Files\Couchbase\Server\var
\lib\couchbase\data\default\139.couch.1; exception: '_local/vbstate'

The same error is returned if destination is another couchbase cluster