If you have been in trouble trying to install Processing 2 Android, CoffeeScrip or Javascript modes with the built-in option, here you have the links to download the modes and install them manually.

You just need to unzip them in "…/Processing/modes" “…sketches/modes/” folder and restart...

Several people who attended the Ladies Learning Code - Processing Workshop I lead on the weekend have said they're running into trouble when trying to install the Javascript Mode from within the Processing IDE. 

Hopefully the the site below will help get around the problem by installing the mode manually.