oh :/ sad
.. i have a save from same world <the corrupted world> that was 2 - 3 weeks ago from the corrupted world its was <backup> its from level.dat0 to level.dat50
and its work <but its an old save> so can it be merged with the corrupted world to restore the level dat missing ?

here is the old ...

hi, my savegame world is corrupted when i try to open it its show me this "badzipfile" i was not able to save ...
how its happened ... i was playing then my laptop suddenly shut down .. opened laptop .. then i went for the game and its works as normal after few minutes playing
i left my main save ...