Well, I’m really hoping it’s not a bug and just to answer your point : I checked in the console just because I could’nt see the multiple fields configurator…
As soon as I click on the field type selector, in any browser (IE, FF, Chrome) I get this javascipt error which blocks any other action…
For now I deactivated any other plugin and I can’t get it to work…
Next step : I’ll retry on a fresh new WP install tomorrow and keep you posted…