i think the two most common problems deploying to heroku are issues with file creation at boot. have you booted production locally and committed all.js to your repo? how about disabling sass compilation? try adding `Sass::Plugin.options[:never_update] = true` to config/environments/production.rb
if none of that helps could you post your log output to gist.github.com (or wherever); google groups mangles it pretty badly.
