You may need to give me a bit more info. Can you post a screenshot of what you get? Does the black screen show up briefly and then dissapear?
Make sure you have set your mod folder if you are rendering from one. Also, I noticed my config has fps = 120, its a much better idea to set this to 60. If you render at 120, you will need to scale your animation speed up 4x in your video editor, it is used for creating a motion blur effect.