This is a question in relation to [[https://support.mozilla.org/en-US/questions/1302462|this]] The fix suggested there seems reasonably easy to follow but I'm a bit unsure about this Delete all '''extensions* files''' and '''compatibility.ini''' in the Firefox profile folder to reset the extensions registry. Apart from '''compatibility.ini''' I can see two '''extensions*''', namely '''extension-preferences.json''' and '''extensions.json'''. Is that correct? Now I'm supposed to delete those three files. And here comes my question: What does '''New files will be created when required.''' mean? What I'm worried about is that all my extensions will disappear and I will have to start with from scratch reinstalling them all again.