Scratch

I am creating a mine craft scrolling side/up and down scrolling game, and need some help.

here is a link to the project thus far

http://scratch.mit.edu/projects/Ibprofen98/3317593

although it doesn't seem to be working at all right now, wont load.

please download, run and try to help me out, also is there a better way for the blocks to be placed?

thanks