I installed your plugin on a website http://www.larepubliquedescitoyens.org/ and it’s fine! It works perfectly and fits my expectations but… I have a major problem when I try to modify the list-building parameters: when I save, the page becomes blue, and nothing happens, modifications aren’t saved.
When I try it locally, it works fine. The trouble appears only on production server. I checked the files attributes, and they seem correct. Th point is that it happens only on this page: other functions work fine. Could you please help me find what’s wrong?