4.1 version doesn't show tiles Puntuado con 4 de 5 estrellas

I have FF 16.0.1 and the 4.1 version of new tab tools doesn't show the tiles at all. Returned to versoin 3 and all is OK

Esta valoración es de una versión anterior del complemento (4.1.1-signed).  Este usuario tiene otras valoraciones de este complemento.

Have you used your Firefox profile with a new version of Firefox (Aurora, Nightly etc)? You might need to clear the prefs browser.newtabpage.rows and browser.newtabpage.columns.