Hello CheckYoStaging,
same here. I read some comments from 2014 with the recommendation to reload all mods. Didn't do any good. There where another notification: "ModuleManager: 237 patches applied, found 10 errors" which indicates that there are some problems with the mods. But after deinstalling all mods the problem still remained. Please tell me if you use some mods and if so, are those identical with some of mine.
I use following mods:
- mechjeb
- nertea-mods: near future electrical, near future propulsion, kerbal atomics, heat control, mark four spaceplane
- alarm clock