评分3星,满分5星

Thanks Paolo for looking into this.
I installed the latest version 1.7.5.1 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.

这个评论是针对附加组件的一个早期版本的(1.7.5.1-signed)。 

Install the 1.7.6.1 when it will be approved by AMO and try to revert that preference to true, it should work as expected

评分4星,满分5星

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

这个评论是针对附加组件的一个早期版本的(1.7.5.1-signed)。 

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.