bookmark tab doesn't work! Puntuado con 2 de 5 estrellas

This extension has been the best one in firefox since I started using it and it has become esential for me, but now, I don't know why, the bookmark tab doesn't work anymore. Does anybody else have this problem? May I do something to fix it?
Thank you.

Esta valoración es de una versión anterior del complemento (0.7.20.1-signed).