libvirt users - Mar 2010 - connect libvirt and virtualbox

conn = libvirt.open("vbox:///session")

return this error:

libvir: VBOX error : internal error unable to initialize VirtualBox driver API
Traceback (most recent call last):
  File "prova.py", line 5, in <module>
    conn = libvirt.open("vbox:///session")
  File "/usr/lib/python2.6/dist-packages/libvirt.py", line 163, in
open
    if ret is None:raise libvirtError('virConnectOpen() failed')
libvirt.libvirtError: internal error unable to initialize VirtualBox driver API

why?



      
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2010/3/31 angelo alfano <angeloalfa76 at
yahoo.it>:
> conn = libvirt.open("vbox:///session")
>
> return this error:
>
> libvir: VBOX error : internal error unable to initialize VirtualBox driver
> API
> Traceback (most recent call last):
> ? File "prova.py", line 5, in <module>
> ??? conn = libvirt.open("vbox:///session")
> ? File "/usr/lib/python2.6/dist-packages/libvirt.py", line 163,
in open
> ??? if ret is None:raise libvirtError('virConnectOpen() failed')
> libvirt.libvirtError: internal error unable to initialize VirtualBox driver
> API
>
> why?
>
This error basically says, that libvirt doesn't support your VirtualBox
version.

What libvirt and VirtualBox version do you use?

Matthias