Cannot read property 'replace' of undefined

[liabru]

When I run:

markdox .js src/**/.js -o API.md

I'm now getting the error:

node_modules/markdox/node_modules/dox/lib/dox.js:30
  js = js.replace(/\r\n/gm, '\n');
         ^

TypeError: Cannot read property 'replace' of undefined
  at Object.exports.parseComments (/node_modules/markdox/node_modules/dox/lib/dox.js:30:10)
  at ReadFileContext.callback (/node_modules/markdox/lib/markdox.js:152:23)
  at FSReqWrap.readFileAfterOpen [as oncomplete] (fs.js:324:13)

I had it working before with this but I just upgraded to markdox@0.1.10, not sure if that has something to do with it.