In the "Address Formats" part of the "Listeners and Clients" section of 
the documentation for the multiprocessing module, AF_PIPE addresses are 
described as having this format:

r'\\\\ServerName\\pipe\\PipeName'

However, it is really this:

r'\\ServerName\pipe\PipeName'

Be careful with raw strings.  The documentation is showing the output of 
repr(), not a properly formed raw string. 

I verified this fix on Windows XP.