adrai/sessionstore — pull request #16 by FlorianWendelborn (2014-09-26 17:54:44+00:00)
Title: fixed mongodb

````
sessionstore/lib/sessionstore.js:55
throw err;
^
TypeError: Cannot read property 'ObjectID' of undefined
at Object. (sessionstore/lib/databases/mongodb.js:6:30)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at getSpecificStore (sessionstore/lib/sessionstore.js:23:14)
at Object.module.exports.createSessionStore (sessionstore/lib/sessionstore.js:52:15)
at Object. (app.js:41:22)
````
`npm list` told me that I'm using `mongodb@2.0.0-alpha1`. This fixed it for me.