SD card log "corrupted"

[RazOn]

I wonder if any of you guys have seen this before and know how to fix it.
SD card logs seem to be "corrupted". The car runs fine the whole time without a hickup, so I'm inclined to think it's only a logging issue.
This card worked perfect. I decided to erase all logs by formatting the card, then used the Erase command in Vems to get rid of any file structure, and re-enabled the logging. Now I get stuff as in the immage below; this is one of the better logs; most of them are completely useless.
Any pointers would be greatly appreciated

[RazOn]

For anybody interested, the corruption seemed to be because the card is not 100% compatible with vems.
Card logged fine for over a year, but decided to erase all logs and start fresh.
I think the Erase command didn't work properly. It got rid of the files but didn't "erase" the card.

To fix it, I did a "long format" in windows (FAT32) then removing the system file format, then in Vems tun logging off, Erase , then turn logging on again.
I don't know if all these steps are necessary, it's just how I did it.

I have Win10. to remove the file system I ran the command prompt window in administrator mode, then used diskpart and clean commands.