so for a while now, I don't know exactly but it has lasted throughout several updates, a bunch of my add-ons have decided to not show up in any menu where I can actually use them, they are listen in the actual add-ons manager and they are all enabled and up-to-date. I have un- and reinstalled all of the absentees several times over, I have done the reset thingy in the tool bar customization menu and have followed just about every piece of advice for similar issues on this forum and many others yet the majority of my add-ons still choose to feign non-existence. if it's helpful at all the culprit that alerted me to the problem was the YouTube Enhancer but it actually extends retroactively to add-ons I had installed way before that one that used to work fine. Also, and I can't say this with 100% certainty, I think at this point this problem applies to every new add-on I install, obviously I have only really seen it happen with the few add-ons I installed since this whole thing started so who knows if I'm just having bad luck picking add-ons that are shy. I have also disabled and re-enabled the add-ons that actually work and generally shifted everything around I case the 4 working add-ons are somehow blocking the all the others from being shown. I really really hope someone can help me with this because it's kind of frustrating being completely unable to actually use the majority of my add-ons :/