Prestashop theme not detected

I'm new to Prestashop development. The first thing I've tried is to create a new theme copying the default theme directory in Prestashop 1.6. The problem I have is that, once created, the theme is not detected by Prestashop: is like the directory wasn't there.

If I create a new theme from the admin panel and replace the directory content with the same files, it works ok.

What should I do to make Prestashop detect my theme? I haven't found any information about it.

Thanks a lot.

Solution

I already answered on similar question here, there are two ways to solve your issue through backoffice

Copy default theme in Preferences -> Theme press Add new theme button and then at the bottom Create new theme + choosing Copy missing files from existing theme.

OR if you already copied theme dir/files by FTP

Same steps, but without copy missed files (of course if you have no missed files) and just put correct new dir name in Name of the theme's directory