MIDI mapping not importing/exporting profiles

Hi there Rekordbox support, I'm currently trying to set-up a MIDI controller to work with Rekordbox to do live performance, but I haven't been able to import or export any profile; when I try to export (or save one profile made) Rekordbox DJ just doesn¿t do anything, and when I try to import a profile it states "fail..."

The driver of the controller is correctly installed, and the "learn mode" seems to work fine (with some exceptions).

Please help