Can't see Flights in Tracking Station or Map

[SkyRex94]

So, I've a running Career save. But it appeared now that I can't select flights anymore, which makes it unable to continue launched flights. They also aren't shown in the map view (nor craft icon), so I can't switch vessels too.

I deinstalled the mods, installed them again, checked various variables, and it isn't the fault of a mod. (But the craft has mod parts installed, so I post here)

It seems to be related to the persistant save file in the save folder.

To be more clear:

-All Mods installed, but not the savefile in question: everything fine.

-All Mods installed, also the savefile in question:

No crafts visible in map or tracking station. Not even in new saves, created while the save in question is installed too.

- I deleted all the Craft files and only left the peristent-save in the save, and the issue is still there.

I have absolutely no idea what could cause this and why it is tied to a save-file...

Any suggestions or solutions?

[SkyRex94]

solved, can be closed