Hi.
Xoops (v 2.2.4) AND db no more recognize variations in the themes folder, as new themes added, files modified, even still see themes deleted and what is surprizing is that the site still shows in the theme that no more exists.
Erased the theme, cleared templates_c content (no the index.html), cleared browsers caches, server side cache, set yes to "Update module template .html files from themes/your theme/templates directory?", updated all the modules, NO MATTER WHAT YOU DO, still displays that theme.
In phpmyadmin, the theme erased still is there.. ..as in the Admin "Default theme" scrolling list.

The above situation happens also in other two sites of mine, core v 2.2.4 and other 2.0.16.
Each core uses a dedicated db under the same server.
Is the first time i ever met this situation.

Thanks in advance for any suggestions.

I post this for possible future need for those that could encounter the same problem.

The provider has worked all day long upon the server and the entire domain was not other than an imagine.
Happy that when they rolled back the backup, the work i made today didn't got desappeared, but i've gone nuts!

Thank also for "audience".

Gianluca.