I recently installed a new HxC in my Emulator so the old HxC became friends with my SP1200

I have some issues though. I can't seem to copy my SP1200 floppies to the HxC. The SP1200 constantly tells me it is a bad file.
I have downloaded some SP1200 files from this site and they work like a charm in my SP1200 - but not my own

Can anyone point me in the right direction here ? I use the Kryoflux solution to rip my Emulator and SP1200 floppies - but I simply can't get the SP1200 to work.
Best;
Kenneth Abildgaard.
Maskinrum.com