Twisitor broken using latest Chrome builds
Not sure why yet.
I looked into this issue and while debugging found the camera issue was due to the error in getUserMedia method in Camera.js. The exception thrown was
NavigatorUserMediaError constraintName: "" message: "" name: "PermissionDeniedError" proto: NavigatorUserMediaError
The Permission Denied message isn't because the client didn't authenticate the request to access the camera, I had this cross checked.
I searched for related issues on newer Chrome versions and found out this was a common issue starting with v28 - http://stackoverflow.com/questions/18074221/chrome-28-app-getusermedia-permission-denied
One of the solutions mentioned for the same issue was to add videoCapture permission in the manifest. This wouldn't work as the videoCapture now works with packaged apps only and twisitor package would be a legacy app (http://developer.chrome.com/extensions/apps)

The best solution to this problem is to restructure the code for an chrome app (http://developer.chrome.com/apps/about_apps) instead, using flight , which would ensure further support and developers could leverage more comprehensive apis (http://developer.chrome.com/apps/declare_permissions)
Any thoughts?
+1 to restructuring Twisitor as a chrome app + using flight