Than you @zing , I think it might be also something wrong with config file but when I checked .xml game list file all the paths to games image were deleted. I restored Recalbox to factory settings and I scraped all C64 games on Skraper. I have account there now and scraped games successfully (I only had to add 50 patches to screenshots for not found games) So it's good it was just matter of few hours of work. I'm making backup of each system now if anything happens again 🙂