Unable to use with Browserify+CommonJS

Hi all

I'm trying to get Cesium working with Browserify.

(Sorry for not formatting the code - google [z]craps[/z] groups, don't seem to provide any sensible editor...)

main.js:

'use strict';
var Cesium = require('cesium');

using deamdify transform:

$ -t deamdify src/_scripts/main.js -o bundle.js

Error: Cannot find module 'lang' from '/var/www/sites/cesium/cs2/node_modules/requirejs/bin'
    at /var/www/sites/cesium/cs2/node_modules/resolve/lib/async.js:46:17
    at process (/var/www/sites/cesium/cs2/node_modules/resolve/lib/async.js:173:43)
    at ondir (/var/www/sites/cesium/cs2/node_modules/resolve/lib/async.js:188:17)
    at load (/var/www/sites/cesium/cs2/node_modules/resolve/lib/async.js:69:43)
    at onex (/var/www/sites/cesium/cs2/node_modules/resolve/lib/async.js:92:31)
    at /var/www/sites/cesium/cs2/node_modules/resolve/lib/async.js:22:47
    at FSReqWrap.oncomplete (fs.js:123:15)

Ideas?