Why are the wireless browsing numbers disappearing in Firefox when I use Sono Key?

Tobii Dynavox developed a new add-on for Firefox called Tobii Dynavox Mouseless Browsing.  It is based on the old add-on simply named "Mouseless Browsing".  There was an issue with TD Mouseless Browsing 1.0.3 which has since been resolved.  To update the TD Mouseless Browsing add-on follow these steps:

1. Open Firefox
2. Select the Menu button (looks like three horizontal lines typically located in the top right corner).
3. Choose Add-ons
4. Select the settings menu (looks like a gear or cog located to the left of the Search all add-ons field).
5. Select Check for Updates

The Add-on should now be updated.  No changes in Sono Key or Communicator were made.