Issue with broken dep

I am using browserify with brfs in a Chrome extension. My gulpfile looks like this:

``` js
gulp.task('browserify', function() {
return browserify(paths.main)
.transform(reactify)
.transform({global: true }, 'brfs')
.plugin('factor-bundle', {outputs: ['build/main.min.js', 'build/background.min.js']})
.bundle()
.pipe(source('common.min.js'))
.pipe(gulp.dest('build/'))
})
```

In the bundle loaded into the Chrome extension, I have a `viewer.html` page, into which I have plopped:

``` html

```

In place of the previously working `bundle.min.js`. Now, however, on load, `main.min.js` no longer works, throwing a `Uncaught TypeError: Cannot read property '0' of undefined` error. The line it points to looks like this:

``` js
{"react/lib/ExecutionEnvironment":682,"react/lib/invariant":788}],280:[function(require,module,exports){
arguments[4][278][0].apply(exports,arguments)
},
```

I'm afraid I have no idea why this is happening, at all, to the point of not knowing how to even name this issue. I'm going to go back to not using factor-bundle for now. I'll have keep this issue in a branch, but I'm stumped.