Can't open preferences

After new FF update I could not access to settings - always this error (XML syntax analyze)

I’ve downloaded installer from main page to repair - okay, it was fixed. But now, one week later, it appears again and installer’s repair didn’t help.

System is Windows 7 64bit, browser is not portable, using Microsoft Security Essentials (previously Avast, when update was made).

Hi mtmb, thank you for the feedback!

At the moment the old language extensions are not compatible with the new IceDragon extension. You need to change your browser’s language to English. To do that go to about:addons, click on the languages menu on the left and disable the current language.

We are looking into adding new compatible language extensions as soon as possible.

Andrei.

Thank you.