unable to create a bucket under windows

Install couchbase server 2.0.0-1516 on windows server 2008 64 bit (1 node).
Run smoke test which create and delete several time default and non default bucket.
At tests create multi none default buckets, the test will fail due to unable to create bucket.
-t setgettests.MembaseBucket.test_value_100b
-t setgettests.MembaseBucket.test_value_500kb

On the UI the node's and bucket's statuses are pending.
CRASH REPORTS appear in logs:

=========================CRASH REPORT=========================
crasher:
initial call: supervisor_cushion:init/1
pid: <0.23646.8>
registered_name: []
exception exit:

{abnormal,255}

in function gen_server:terminate/6
ancestors: [ns_port_sup,ns_server_sup,ns_server_cluster_sup,<0.67.0>]
messages: []=========================CRASH REPORT=========================
crasher:
initial call: ns_memcached:init/1
pid: <0.23611.8>
registered_name: 'ns_memcached-default'
exception exit: {badmatch,{error,closed}}
in function gen_server:terminate/6
ancestors: ['ns_memcached_sup-default','single_bucket_sup-default',
<0.22907.8>]
messages: []
links: [<0.23665.8>,<0.23666.8>,<0.23668.8>,<0.64.0>,<0.22928.8>]
dictionary: []
trap_exit: true
status: running
heap_size: 17711
stack_size: 24
reductions: 17835
neighbours:
neighbour: [

{pid,<0.23668.8>},
{registered_name,[]},
{initial_call,{erlang,apply,['Argument__1','Argument__2']}},
{current_function,{gen,do_call,4}},
{ancestors,['ns_memcached-default', 'ns_memcached_sup-default', 'single_bucket_sup-default',<0.22907.8>]},
{messages,[]},
{links,[<0.23611.8>,#Port<0.142256>]},
{dictionary,[]},
{trap_exit,false},
{status,waiting},
{heap_size,10946},
{stack_size,24},
{reductions,1151}]
links: [<0.407.0>]
dictionary: []
trap_exit: true
status: running
heap_size: 1597
stack_size: 24
reductions: 2361
neighbours:

=========================CRASH REPORT=========================
crasher:
initial call: ns_memcached:init/1
pid: <0.23611.8>
registered_name: 'ns_memcached-default'
exception exit: {badmatch,{error,closed}}
in function gen_server:terminate/6
ancestors: ['ns_memcached_sup-default','single_bucket_sup-default',
<0.22907.8>]
messages: []
links: [<0.23665.8>,<0.23666.8>,<0.23668.8>,<0.64.0>,<0.22928.8>]
dictionary: []
trap_exit: true
status: running
heap_size: 17711
stack_size: 24
reductions: 17835
neighbours:
neighbour: [{pid,<0.23668.8>}

,

{registered_name,[]}

,
{initial_call,{erlang,apply,['Argument__1','Argument__2']}},
{current_function,{gen,do_call,4}},

{ancestors,['ns_memcached-default', 'ns_memcached_sup-default', 'single_bucket_sup-default',<0.22907.8>]}

,

{messages,[]}

,

{links,[<0.23611.8>,#Port<0.142256>]}

,

{dictionary,[]}

,

{trap_exit,false}

,

{status,waiting}

,

{heap_size,10946}

,

{stack_size,24}

,

{reductions,1151}

]