Firefox Addons – How to Get Incompatible Addons Working Again

browser-addonsfirefoxfirefox-extensionsxul

After being forced to update to Firefox Quantum, I:

  1. downloaded Firefox 52.9.0 ESR
  2. toggled xpinstall.signatures.required in about:config from true to false

But even when most XUL add-ons work again, in Tree Tab Style and Reddit Enhancement Suite I have this error:

Tree Tab Style error

In previous times when I have to downgrade Firefox, I've never seen this. All I need is to do (2) and all is good. Googling the problem yields no result. How can I fix this?

Unfortunately, not all Firefox addons are supported in Pale Moon. I can't use Waterfox too, because it doesn't support 32-bit machines.

Best Answer

That's because when Firefox updated it also updated the addons. Later versions of them are simply incompatible with Firefox 52. Visit the old version of Tree Tab Style and RES to install them.

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