v-magine installation fail with AsyncLoopThread list index out of range

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Hi! I'm try to install v-magine on windows 8.1 with Hyper-V

The virtual switch already created and used by others VM (now stopped).

After setting password, network and providing paasword for host credenfials, i try to press "Next" (my virtual switch is selected right) then i received following error: list index out of range.

Details from log:

2015-05-19 23:10:23,989 DEBUG stackinabox.virt.hyperv __init__ 36 8804 AsyncLoopThread Initializing HyperVDriver
2015-05-19 23:10:24,035 DEBUG stackinabox.virt.hyperv create_vswitch 127 8804 AsyncLoopThread create_vswitch called. v-magine-internal
2015-05-19 23:10:24,035 DEBUG stackinabox.virt.hyperv create_vswitch 217 8804 AsyncLoopThread create_vswitch called. vswitch_name: v-magine-internal, external_port_name: None, create_internal_port: True
2015-05-19 23:10:24,188 ERROR logging error 1596 8804 AsyncLoopThread list index out of range
Traceback (most recent call last):
  File "C:\Dev\StackInABox\build\stackinabox\out00-PYZ.pyz\stackinabox.worker", line 666, in deploy_openstack
  File "C:\Dev\StackInABox\build\stackinabox\out00-PYZ.pyz\stackinabox.worker", line 208, in _deploy_openstack_vm
  File "C:\Dev\StackInABox\build\stackinabox\out00-PYZ.pyz\stackinabox.actions", line 460, in create_vswitches
  File "C:\Dev\StackInABox\build\stackinabox\out00-PYZ.pyz\stackinabox.virt.hyperv.driver", line 129, in create_vswitch
  File "C:\Dev\StackInABox\build\stackinabox\out00-PYZ.pyz\stackinabox.virt.hyperv.netutilsv2", line 249, in create_vswitch
IndexError: list index out of range
2015-05-19 23:10:24,188 ERROR logging error 1596 8804 AsyncLoopThread list index out of range
2015-05-19 23:10:24,190 ERROR logging error 1596 8804 AsyncLoopThread Exception in callback <Task finished coro=<coro() done, defined at C:\Dev\StackInABox\build\stackinabox\out00-PYZ.pyz\trollius.coroutines:257> result=False>()
2015-05-19 23:10:24,190 ERROR logging error 1596 8804 AsyncLoopThread 'Task' object is not callable
Traceback (most recent call last):
  File "C:\Dev\StackInABox\build\stackinabox\out00-PYZ.pyz\trollius.events", line 151, in _run
TypeError: 'Task' object is not callable