OK, why not just purge all your save files (and maybe back them up first) and see what happens.
Viewing post in Advanced Education with Viktor Strobovski comments
Noooooo I'm talking about the files at C:\Users\PUTYOURNAMEINHERE\AppData. I forgot whether Local, LocalLow or Roaming has it but there should be a folder called "STROBOVSKY" in there. I meant try the save data, not exactly the game data.
Look, I got my achievements corrupted and they were all big red Windows error signs. Maybe your save files are corrupted as well.