dear all, I can confirm that Gretl works smoothly from a USB stick while running a Windows 10 box of a Linux virtual machine. Thanks to Sven for pointing to the instructions and for NOT pointing out that I could have found it by myself :-) Stefano -- ________________________________________________________________________ Stefano Fachin Professore Ordinario di Statistica Economica Dip. di Scienze Statistiche "Sapienza" Università di Roma P.le A. Moro 5 - 00185 Roma - Italia Tel. +39-06-49910834 fax +39-06-49910072 web http://stefanofachin.site.uniroma1.it/