I have killed Jebediah, and wanted to bring him back, so I went to the persistent.sfs of that save and changed his status to "Available". The game now says "string was not recognized as a valid boolean" and I'm worried, that if I load the save I'll make things worse. I am playing on the newest version.
Mods I have installed:
KerbalEngineer
MechJeb2 (for 1.8)
KerbalVR (installed after I got the error)
Here's persistent.sfs: https://gist.github.com/Cynderblood/f67888f70c58f7f5398bbc807e78f60f