I use xen-4.0.0

My domU successfully started, but when i tried to connect to DomU console i get error:

root@debian-office:/opt/src/NexetaStor# xm console NexentaStor-EVAL-2.2.0 

Unexpected error: <type 'exceptions.TypeError'>

Please report to xen-devel@lists.xensource.com

Traceback (most recent call last):

  File "/usr/sbin/xm", line 7, in <module>

    main.main(sys.argv)

  File "/usr/lib/python2.5/site-packages/xen/xm/main.py", line 3616, in main

    _, rc = _run_cmd(cmd, cmd_name, args)

  File "/usr/lib/python2.5/site-packages/xen/xm/main.py", line 3640, in _run_cmd

    return True, cmd(args)

  File "/usr/lib/python2.5/site-packages/xen/xm/main.py", line 1891, in xm_console

    console.execConsole(domid, num)

  File "/usr/lib/python2.5/site-packages/xen/xm/console.py", line 28, in execConsole

    xen.util.auxbin.execute(XENCONSOLE, [str(domid), "--num", str(num)])

  File "/usr/lib/python2.5/site-packages/xen/util/auxbin.py", line 30, in execute

    os.execv(exepath, a)

TypeError: coercing to Unicode: need string or buffer, NoneType found 

Thanks.