Tests are broken

[darvin]

~/Projects/zappa on master*  → cake test

/Volumes/work/Projects/zappa/tests/support/tester.coffee:299
    throw err;
          ^
TypeError: Cannot read property 'prototype' of undefined
    at Object.<anonymous> (/Volumes/work/Projects/zappa/src/zappa.coffee:66:15)
    at Object.<anonymous> (/Volumes/work/Projects/zappa/src/zappa.coffee:755:4)
    at Module._compile (module.js:449:26)
    at Object.require.extensions..coffee (/usr/local/share/npm/lib/node_modules/coffee-script/lib/coffee-script/coffee-script.js:30:21)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:362:17)
    at require (module.js:378:17)
    at Object.<anonymous> (/Volumes/work/Projects/zappa/tests/assets.coffee:4:11)
    at Object.<anonymous> (/Volumes/work/Projects/zappa/tests/assets.coffee:192:4)