22, invalid agument error

[Infinite Corridor]

I am trying to get an echoserver running on my N80 Nokia cell phone,
that uses "python for s60".
What worked:
I ran echoclient on the phone and echoserver on my Powerbook and it
worked.

What doesnt work:
When I try running the same scripts, so that I run echoclient on the
laptop and echoserver on the cellphone, the echoserver doesnt work(Yes,
I have changed the IP address correctly).

The error I get is:

File "e:/python/echoserver.py". line
15 in ?
  sockobj.bind(('',40007))
# bind it to server port number
File "<string>", line 1, in bind
error: (22, 'Invalid argument')

Why is this program showing an error on the cellphone when it is
running fine on the Mac?

Thanks, any help will be appreciated.

Dave