C:\node-des\test>node vnc-test.js

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
Error: unknown error
    at Object..node (module.js:472:11)
    at Module.load (module.js:348:31)
    at Function._load (module.js:308:12)
    at Module.require (module.js:354:17)
    at require (module.js:370:17)
    at Object.<anonymous> (C:\node-des\test\vnc-test.js:1:73)
    at Module._compile (module.js:441:26)
    at Object..js (module.js:459:10)
    at Module.load (module.js:348:31)
    at Function._load (module.js:308:12)