Let's see if I understand what was written in the last answer. I have to rename the file Purple_Rose.r2skin-addon should become r2skin-addon and copy contained in the Scripts folder inside the theme folder Purple_Rose and replace this file with one named weather.lua. It 's so? I did this and now, going to see the settings of the weather tab I see that you entered the code on the Italian city that interests me. But still does not work and is always "Update".
I know I could leave alone and use other skins that work, but this has become something of a challenge. Why should not work like the others?
I do not know if I made ​​mistakes or I have forgotten a step in the execution.
Thanks for your patience and courtesy of the answers. Bye.