I'd like to enable Spanish as second language on my zenphoto 1.4.12 installation, but Spanish cannot be enabled in the Options -> General -> Language list (the checkbox is grayed out).
I have enabled "Multi-lingual" in Options -> General -> Language, Spanish translations are installed in `zp-core/locale/es_ES/` and `locale -a` lists `es_ES.utf8`.
Current locale setting as shown in toe "Overview" tab is `en_US.UTF8`.
Did I miss anything?
Thanks a lot in advance,