UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36

Steps to reproduce the problem:
1. I built the Chromium in Ubuntu 16.10 and ran it.
2. I copied the compiled version of ChromeVox Folder as an Extension folder to my Mac OS.
3. Then I tried to load the ChromeVox folder (that contains manifest.json) as an unpacked extension through chrome://extensions/

What is the expected behavior?
It should be working on Chrome in Mac as an unpacked extension, but it didn't!

What went wrong?
I think a generated ChromeVox Folder should be loadable and working on chrome in different OS.  I understand that this is not meant to work on mac, but I was wondering if there is a way to get it working. 

I got this console error by loading chromeVox in my chrome on Mac:
Uncaught TypeError: cvox.ChromeVox.recallInit_ is not a function at cvox.ChromeVox.initDocument (chromeVoxChromePageScript.js:2027)

WebStore page: https://chrome.google.com/webstore/detail/chromevox/kgejglhpjiefppelpmljglcjbhoiplfn

Did this work before? N/A 

Chrome version: 56.0.2924.87  Channel: n/a
OS Version: Ubuntu 16.10
Flash Version: Shockwave Flash 26.0 r0

Any help is appreciated!