Error creating new Ticket

[darmie]

This is my code:

    var util = require('util'),
        http = require('http'),
        httpProxy = require('http-proxy');

    httpProxy.createProxyServer({target:'http://localhost:9000'}).listen(8000);

    var  TicketManager = require("ticketman").TicketManager;
    var  TicketWorker = require("ticketman").TicketWorker;
    var ticketWorker = null;
    var mongoose = require('mongoose');

    var express = require('express');
    http.createServer(function (req, res, body) {
        res.writeHead(200, { 'Content-Type': 'text/plain' });
        res.write('request successfully proxied!' + '\n' + JSON.stringify(req.headers, true, 2));
        res.end();
    }).listen(9000);
        var ticketManager = new TicketManager("test ticket_manager", "http://localhost:3456");
        // = new TicketWorker({id:1001, name:"test ticket_manager", host:"http://localhost:9000", category:"worker", consumerSecret: "bigSmalls"});
        var category, content, title;
        content = {
            detailed: "content of ticket",
            mixed: ["data"]
        };
        title = "test ticket " + (Date.now());
        category = "sample";
        ticketManager.issue(title, category, content, function (err, ticket) {
            setTimeout(function(){
                console.log(ticket);
                console.log(err);
            }, 500);

        });

}).call(this);

But I am getting this error!
[Error: Fail to create ticket:test ticket 1449613199454#sample, due to MongoErro r: driver is incompatible with this server version]