Does anyone know what this means?

[anti_con2]

I just opened ksp to it and I'm afraid to open the save in case something happens. https://anticon2.imgur.com/all/

[Spricigo]

corrupted save...that is not nice

[Flavio hc16]

there is a corrupted save, to solve it you have to go:

the folder where you keep ksp/ksp/saves/ (name of your career save):

here you will find few  things:

https://ibb.co/c7HzMS

1) you have then to delete the last persistent file (ONLY the persistent, NOT the persistent.loadmeta)

2) go to backup and take the last persistent file ( it will have the date between brackets) and place it where you deleted the persistent at point 1

3) rename the persistent file you have just moved deleting the date between the brackets

4) Done!! You should be good to go, having just lost the last 5 minutes or so of gameplay

[Snark]

Moving to Technical Support.

[Geonovast]

9 hours ago, anti_con2 said:

I just opened ksp to it and I'm afraid to open the save in case something happens. https://anticon2.imgur.com/all/

Remember that whenever anything's dicey and you're worried just opening the save could make it worse, all you have to do is simply copy the save folder to somewhere safe.  Literally everything regarding your save is inside that folder, and if you make things worse, you can keep restoring from the backup.