Gotcha! It worked perfectly; a suspect I have is that libhdf5_7 was downloaded inside the hdf5 directory and thus not installed automatically. I had to put it outside, then additional installation went successfully and Octave started. Many thanks for your the job done and the patience bore Kind regards, Federico Invita i tuoi amici e Tiscali ti premia! Il consiglio di un amico vale più di uno spot in TV. Per ogni nuovo abbonato 30 € di premio per te e per lui! Un amico al mese e parli e navighi sempre gratis: http://freelosophy.tiscali.it/ -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple