Whenever you click the Install button on the badge installer, it just does nothing until "Try Again" appears, and try again does nothing as well. This seems to be happening in all Firefox versions, but it fixed when I reverted to flash player versions 10.3 and 11.5. On version 11.6 and beyond the feature still seemed to be broken however.
There doesn't seem to be any problems in Chrome.
Has anyone else experienced this issue and know of a fix?