OPL rejecting an editted VMC

[requeijaum]

1 - Created a VMC with OPL r1602 Jay-Jay's build using SMB server connection - not USB.

2 - Run Persona 4 [NTSC-U/C] from SMB share and read the VMC. No save-game files found.

3 - Copied saved games from my physical MC on slot 1 to a USB Flash Disk, in PSU format.

4 - Used MyMCPlus to inject the PSU saves to the VMC located on the SMB share.

5 - OPL complained about some "error".

I am suspecting about some ECC fixes made by MyMCPlus when opening a OPL-created VMC.