On Fri, 19 Oct 2012, mariusz doszyń wrote: Can you be more specific? Do you get an error message? Until the details are known, it's impossible to say. In the meantime, if you can open the xlsx file in a spreadheet, you can always convert it to csv. -------------------------------------------------- Riccardo (Jack) Lucchetti Dipartimento di Economia Università Politecnica delle Marche (formerly known as Università di Ancona) r.lucchetti(a)univpm.it http://www2.econ.univpm.it/servizi/hpp/lucchetti --------------------------------------------------