mongoose err

gistfile1.txt

    node_modules/mongoose/node_modules/mongodb/lib/server.js:228
            process.nextTick(function() { throw err; })
                                                ^
    Error
        at Object.<anonymous> (/Projects/node/flapper-news/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/lib/error.js:42:24)
        at Module._compile (module.js:460:26)
        at Object.Module._extensions..js (module.js:478:10)
        at Module.load (module.js:355:32)
        at Function.Module._load (module.js:310:12)
        at Module.require (module.js:365:17)
        at require (module.js:384:17)
        at Object.<anonymous> (/Projects/node/flapper-news/node_modules/mongoose/node_modules/mongodb/node_modules/mongodb-core/index.js:2:17)
        at Module._compile (module.js:460:26)
        at Object.Module._extensions..js (module.js:478:10)