Why wont my asset save?

The following assets failed to save correctly:
/Game/FirstPersonBP/Blueprints/FirstPersonCharacter

This error message keeps popping up and I cant save my asset what wrong?

Have you made any changes in the class? Added Variables, tried to cast? Created Loops or Makros?

Nearly anything can cause Compiling Errors or initialization Errors, that causes the impossibility of saving the Class.

Give us some more Infos to deal with.