Hi Roberto A. Foglietta
The .info file you have displayed in the first post is missing the Tags: field. The repository has a tags.db file that
gets updated whenever an extension is added/removed from the repository. The tags.db file is used by the Apps
utility to search if an extension exists in the repository.
If you download the tarball from here:
http://tinycorelinux.net/10.x/x86/tcz/src/PicFormat/You'll find the compile script I use whenever I want to build something. It may or may not contain some ideas you find
useful. One of my pet peeves is .tcz.list files that are not in ascending sorted order, so you might want to check that
out.