"Failed to instantiate vehicle factory" vertx version 2.1M1 about nodyn HOT 2 CLOSED

Using Java version 1.8
$ cd temp/nodyn
$ cat langs.properties
nodejs=org.projectodd~nodyn-verticle~0.1.1-SNAPSHOT:org.projectodd.nodyn.NodeJSVerticleFactory
.js=nodejs

$ cat test.js
var console = require('vertx/console');

console.log(JSON.stringify(nodyn));
$ vertx version
2.1M1 (built 2013-10-29 11:11:22) 
$ vertx run test.js
{"QueryString":{}}
Succeeded in deploying verticle 
^C
$