Thanks for feedback.
Yes, I have installed FxFactory 2.5.2.
Your suggestion about CoverFlux2 made me think that the version I downloaded yesterday night would not be the 2.0 version, even though I saw that version on your site yesterday night so I checked version via FxFactory and I found that the CoverFlux version I downloaded was 1.0.3 so I downloaded v2 and voila it worked immediately!
Thanks again for your good support!
Robertto