[farshizzo]

Hi,

This issue has been resolved since version 2.52a. I believe the latest version will be released sometime next week. When you do have the latest version you can do the following:

class VizServer(viz.EventClass):
    def __init__(self):
        viz.EventClass.__init__(self)
        self.clientName = None
        self.clientMailbox = None

    def networkCallback(self, message):
        print "Message content : ", message[2:]

    def connect(self, theClientName):
        self.clientName = theClientName
        self.clientMailbox = viz.add(viz.NETWORK, self.clientName)
        if not self.clientMailbox.valid():
            print __name__, ": EXCEPTION : Connection failed"
        self.callback(viz.NETWORK_EVENT, self.networkCallback)

Note that I changed your class to inherit from viz.EventClass.

Also, when posting snippets of code, you can use the following tag: [code ] insert code [/code ]