Meteor 1.3 *early beta* now available

I am receiving this error only after running meteor reset

While processing files with cosmos:browserify (for target web.browser):
packages/kadira:flow-router/client.browserify.js: Arguments to path.resolve must be strings

Browserify options:
  undefined

packages/kadira:dochead/package.browserify.js: Arguments to path.resolve must be strings

Browserify options:
 undefined