FDSkey gives me Error 03 while attempting to save

[Cyrus331]

When FDSKEY plays some games that need to be archived, a 003 error message will appear. Other games that do not require archives can be played normally. Is it a RAM problem, a FDSKEY problem, or an SD card problem?

[ClusterM]

Hi! What you mean by "archived"?

[donly]

I have tried using an SD card to play a game that requires a save file and it results in error 07.
Can you try with another SD card

[Cyrus331]

Hi! What you mean by "archived"?

It means this game has a save function，

Nazo no Murasamejou (1986)(Nintendo)(J)[tr En].fds

Metroid (v1.02) (1986)(Nintendo)(J)[h3].fds