I bought in to the L-mount system early, and use multiple Panasonic bodies. I originally bought all ProGrade CF Express and SD cards, and have since moved on after total failure early on with the CF Express product with no support. I read about a new iterations of their recovery software (3.1) and downloaded a trial only to find it was "Expired" upon installation. I then went on to purchase a license only to find that I cannot activate it. Is there possibly a worse alternative to ProGrade for the S1R and S1 bodies? I suppose so, but I hope someone here can share anything positive about recovering failed cards. I changed to Sony to 2021 and have had a very positive experience without failures, and even with my V90 Tough series SD I sent in on a recalled cards program (that still worked) and I was sent new cards AS WELL AS my original cards that were part of the recall, and they all still work without failure two years on. Even with serial and purchase information Prograde gave me the brush-off from the start, and the software gimmick is just adding to the insult. If you have found any solutions with failed Prograde cards, please let me know, and if not beware. Each of the cards failed in both my S1R bodies, I shoot raw on SD, and video to CFE.