Nodejitsu deployment error

Nodejitsu1

C:\Users\Gaurav\Documents\Development\js\tictactoe>jitsu deploy
info:    Welcome to Nodejitsu gaurav0
info:    jitsu v0.9.8
info:    It worked if it ends with Nodejitsu ok
info:    Executing command deploy
warn:
warn:    The package.json file is missing required fields:
warn:
warn:      subdomain,   engines
warn:
warn:    Prompting user for required fields.
warn:    Press ^C at any time to quit.
warn:
prompt: subdomain:  (gaurav0.tictactoe) tictactoe
prompt: engines.node:  (0.8.x)
error:   The subdomain requested is already in use
prompt: subdomain:  (gaurav0.tictactoe.gaurav0) ttt
warn:    About to write C:\Users\Gaurav\Documents\Development\js\tictactoe\packa
ge.json
warn:    Using '*' as a version for dependencies may eventually cause issues
warn:    Use specific versions for dependencies to avoid future problems
warn:    See: http://package.json.jit.su for more information
data:
data:    {
data:        private: true,
data:        name: 'application-name',
data:        engines: { node: '0.8.x' },
data:        version: '0.0.1',
data:        subdomain: 'ttt',
data:        scripts: { start: 'node app' },
data:        dependencies: {
data:            socket.io: '0.9.10',
data:            ejs: '*',
data:            less-middleware: '*',
data:            express: '3.0.0rc4'
data:        }
data:    }
data:
prompt: Is this ok?:  (yes)
info:    Analyzing application dependencies in node app
info:    Checking app availability application-name
info:    Creating app application-name
info:    Creating snapshot 0.0.1
info:    Updating app application-name
info:    Activating snapshot 0.0.1 for application-name
info:    Starting app application-name
error:   Error running command deploy
error:   Nodejitsu Error (500): Internal Server Error
error:   There was an error while attempting to deploy the app
error:
error:   package.json error: can't find starting script: node app
error:   Package.json start script declared but not found
error:
error:   This type of error is usually a user error.
error:   Error output from Haibu:
error:
error:   Error: package.json error: can't find starting script: node app
error:       at Spawner.spawn (/root/haibu-orchestra/node_modules/haibu/lib/haib
u/core/spawner.js:232:17)
error:       at Object.oncomplete (fs.js:297:15)
help:    For help with this error contact Nodejitsu Support:
help:      webchat: <http://webchat.nodejitsu.com/>
help:          irc: <irc://chat.freenode.net/#nodejitsu>
help:        email: <support@nodejitsu.com>
help:
help:      Copy and paste this output to a gist (http://gist.github.com/)
info:    Nodejitsu not ok

C:\Users\Gaurav\Documents\Development\js\tictactoe>node app