Rated 5 out of 5 stars

DaveD;
If you were perpending, Mozilla not reviewed new version yet!
So you should go "Version History" page and download new updated version manually or in Firefox go to Tools > Add-ons > Extensions and update UnMHT.

This review is for a previous version of the add-on (5.6.9.1-signed).  This user has 3 previous reviews of this add-on.