Hi, I finally managed to have version 1.60 working. I downloaded today a new copy of 1.60 and I noticed that the file size was slightly different: 179106 Kb today, 179095 the file I downloaded 5 days ago.
Anyway today I did the same procedure I had already done: uninstall of old version, delete the old zorro folder, install new version.

edit: with new file on other pc I could just upgrade the existing installation without need to uninstall.

regards
enrico