Error Ruby (rmega::Errors::ServerError)

/var/lib/gems/1.9.1/gems/rmega-0.1.7/lib/rmega/session.rb:71:in `request': Object (typically, node or user) not found (Rmega::Errors::ServerError)
    from /var/lib/gems/1.9.1/gems/rmega-0.1.7/lib/rmega/session.rb:37:in `login'
    from /var/lib/gems/1.9.1/gems/rmega-0.1.7/lib/rmega/session.rb:21:in `initialize'
    from /var/lib/gems/1.9.1/gems/rmega-0.1.7/lib/rmega/session.rb:8:in `new'
    from /var/lib/gems/1.9.1/gems/rmega-0.1.7/lib/rmega/session.rb:8:in `login'
    from pruebamega.rb:7:in `conexion'
    from pruebamega.rb:12:in `

'

Solucion:
Verifica los datos de usuario y contraseña ya que ese error habla de eso.