black screen for map

my world said it rendered and is only showing a black screen except for the caves section.

http://www.minecraftworldmap.com/worlds/.../64/-7/0/0

my first attempt, any help would be great.

There doesn't seem to be anything wrong with the file structure of your map. I'm not sure why, but your map may have been interrupted during the render process.

Try sending your map through the render process again. To do this visit your map's page and click the edit button located underneath where your map should be displayed. Scroll down the page until you see the option "Render Again?" and click the check box. Then scroll down to the bottom of the page and click the "Save!" button.