Рейтинг 3 из 5 звёзд

Thanks Paolo for looking into this.
I installed the latest version but it still didn't fix the problem.
I then went to about:config and changed the property of "extensions.profileswitcher.use_onbeforeunload" to false in all the profiles I have created and I can finally switch between them again.

Это отзыв для предыдущей версии этого дополнения ( 

Install the when it will be approved by AMO and try to revert that preference to true, it should work as expected

Рейтинг 4 из 5 звёзд

Worked fine for me until FF 45. If I am not mistaken the author is not supporting its development anymore. Anyone knows any alternatives?

Это отзыв для предыдущей версии этого дополнения ( 

This bug should be fixed in 1.7.6 version, released now.
A workaround is to set the preference "extensions.profileswitcher.use_onbeforeunload" to false, but I suggest to try before the new version.

I'm still supporting the development, because this extension is for Thunderbird too, of course when XPCOM/XUL will be dropped support for Firefox will end.