Hello folks, I said earlier: "Apparently, I need to restart the PC any time that somethig goes wrong with aquaterm" No, the problem is really with the ZnO tutorial .apj files. I get aquaterm starting when I open a Cu.chi file, but I do not get it to open when I try to read the ZnO1.apj file. I think this is due to some bug in horae, which makes the programs not really good at managing project files. I think Bruce said something like that some time ago. Stefano -- ____________________________________________ Stefano Ciurli Professor of Chemistry Department of Agro-Environmental Science and Technology University of Bologna Viale Giuseppe Fanin, 40 I-40127 Bologna Italy Phone: +39-051-209-6204 Fax: +39-051-209-6203 "Fatti non foste a viver come bruti, ma per seguir virtute e canoscenza" Dante Alighieri - Inferno - Canto XXVI