PKHeX invalid or corrupted gc memory card

[EnergiDaan]

When I use latest version of PKHeX. I cannot open my Pokemon Diamond save file because I get the error "invalid or corrupted gc memory card". Every other save file works perfectly on PKHEx but not my pokemon diamond save file. My Pokemon DIamond save file works perfectly when I use it, Can someone explain why this happens?
 

[theSLAYER]

upload the save for us to see.