I'm working on a Blockly project. 

I just changed computers.

When I run build.py on my new computer to compress the files, it produces a version of blocks\_compressed.js that does not work. When I try to use it, none of my blocks display, because it thinks the colour property is set to an undefined variable.

On my old computer, I can produce a blocks\_compressed that works fine.

I copied the entire blocks directory from my old computer to to the new one, but still get different results.

When I open the files, they appear to have the same number of lines, but the lines are in different orders. It's as if the files in the blocks directory are getting processed differently on the two computers.

I am using the same version of closure\_library.

Can anyone offer a suggestion about why I would be seeing these different results?