Hi Scott,
I want to thank you for your valuable help, which helped me to solve the problem: I had not installed vACMI, as I thought it was useless for my use. Unfortunately, the poor documentation provided by SSW for their precise as for me inexplicable policy leaves the end user in the dark of many things. In fact, I found all the information useful for the correct use of Zipper in this forum and through YouTube. I must say, however, that SSW has created perhaps the best aircraft I have ever used with a simulator, limited to my ability.
Thank you again,
Cheers,
Fulvio.