hello RMcM, as an alternative to those addons you could also go to the firefox menu ≡ > addons > plugins & set shockwave flash or other plugins to "always ask" before they activate - maybe also in conjunction with https://addons.mozilla.org/firefox/addon/click-to-play-per-element/

philipp [[#answer-682478]

That sounds like it might be a viable workaround, but I'm hoping to get proper functionality from Flashblock. It had been working since I installed it about a year ago. I don't watch Youtube a lot, but it worked OK a few days ago.

in this case please directly contact the extension developers through the means provided at their homepage - they can likely give you more detailed guidance and are the only ones who can fix bugs or make necessary adjustments in the addon for new firefox versions. thank you...