Error on Cake Bake

[zwhitchcox]

I get the following error when trying to 'cake bake'

Minifying tmp/engines/traceur-default.js failed:
Command failed: tmp/engines/traceur-default.js:805: ERROR - Parse error. Property "sent" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:1321: ERROR - Parse error. Property "baseURL" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:3004: ERROR - Parse error. Property "experimental" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:3012: ERROR - Parse error. Property "atscript" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:3023: ERROR - Parse error. Property "modules" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:3037: ERROR - Parse error. Property "sourceMaps" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:9953: ERROR - Parse error. Property "found" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:10373: ERROR - Parse error. Property "index" already defined in this object literal.
    }
     ^

tmp/engines/traceur-default.js:16850: ERROR - Parse error. Property "found" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:28228: ERROR - Parse error. Property "state" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:28235: ERROR - Parse error. Property "metadata" already defined in this object literal.
    },
     ^

tmp/engines/traceur-default.js:28711: ERROR - Parse error. Property "baseURL" already defined in this object literal.
    },
     ^

12 error(s), 0 warning(s)