Hi, in languages folder the Italian translation files are named schema-IT_it.po and schema-IT_it.mo . This is wrong and doesn't work. It must be schema-it_IT.po and schema-it_IT.mo.
It is: https://github.com/raventools/schema-creator/tree/master/languages
See this commit: 2d96614 and its description.
but it's wrong in wordpress .zip http://downloads.wordpress.org/plugin/schema-creator.zip
We need to get a point release out in the near future (which will prompt everyone with the plugin installed to do an update). I'll get that on the schedule.
@stephenyeargin That still won't solve it. Read the description on that commit.