Cammagno, I've included the Italian translations and the structure doc. Thanks! My only concern with the latter is that it's easy to forget to add a new file and keep it up-to-date. I'll try though.

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Oh, well, my suggestion of the inclusion of the structure.doc file was intended only for "real" releases (we can call them "public" ones), not for "working" versions, because I know that it's a pain to keep it updated.
So, if you prefer, you can avoid to do it, and I can do it for you; I'll do it in any case fom my personal use (I like to test mod, and to do it I need to know exactly which files they put in my directories) and post the risult here (and/or somewhere else) after every "working" release.. the only problem is that in this way the updated file can't be inside the zip, but the updated file can be added only to the public releases, while the working ones can be left without it or with the previous one. I hope that I've been able to explain clearly enough what I mean ^^;
The reason the mod isn't working for you is because I am now ZIPping it up from my mods folder, so the directory is now called "Assets" instead of "CustomAssets". This is why the renaming procedure seemed odd to you but actually makes sense. If you rename that directory, it should work fine.
So you mean that I've to rename the folder Assets caming from the zip file into CustomAssets? Oh, now everything is clear ^_^
Ok, now it loads, but not properly. Almost all the text is gone from the menus, including the main ones (the ones used to load the game or start a new one) and the in-game ones... only the text added by BUG mode is visible.
I think it's something related with localized version, because the same problem arised in the past with another mod and it was discovered that it was so.
Edit: Ok, confirmed, it is so, if I manually force the game to english version (through the ini file) the text is back. So I suppose that as it is, the call to the bug menus goes over the call for the localized ones, "overwriting" it instead of adding over it. Again, I hope that I've been able to explain properly [remember that English is not my language, so be patient with my msgs, please ^^;]
If you have problems to figure out a solution, I can search the forum for the past solution with that other mod I spoke about above, but it may be a not-so-easy search ^_^;