Cant save asset as unreal only partially loaded it

[gameme_1 (VinodMadigeri)]

I am having same issue now. Here is how it started,

1. –first I was editing a class blueprint when editor crashed

2. And then I reopened editor and it asked me if I wanted to recover
   last open asset.

3. I selected yes, but it failed to recover anyway,

4. Now when I open class print to edit stuff and save it, it
   say that "Warning Asset

   ‘D:/Work/TwoPlayer/Content/Blueprints/BP_AI_Pawn.uasset’
   cannot be saved as it has only been
   partially loaded"

PS: I lost all my work and had to restart unreal editor again to fix it.