Ummmmm, HELP (Possibly corrupt save file)

[Epsilon_Operative]

So I went to boot ksp after my PC crashed and when I went to open my save file it said "error accessing this save, value cannot be null". How do I fix this?

[jimmymcgoochie]

Open the KSP folder and go into saves/(your save name)/backups, grab the file called persistent_(most recent date and time stamp), copy that into saves /(your save name). Rename persistent.sfs to persistent-broken.sfs or something similar, rename the backup file you copied over to persistent.sfs and try to load that. You may lose a bit of progress but it should be able to load OK.