broken with Ffox v24 ? Rated 2 out of 5 stars

Nifty idea, but unfortunately it breaks with Ffox v24(beta). When i click the icon, the expected popup balloon opens (to the default "Arrows" options). When I click on the dropdown character option button the popup goes totally blank. Nothing in the popup balloon, it's empty, and it stays that way when reopened.
I tried reinstalling it and sure enough, the Arrows option displayed, but clicking the dropdown selection option resulted in yet another blank/empty popup. :-(
(two stars = one for the idea & another that it's restartless!)