This happened to me as well. I'm using Windows 10 Edition. My world of 2 years will no longer load – Minecraft crashes whenever I try to open it. And I also can't open any of the backups of that world.
I did try loading the seed as a new world, and that worked. Doing so, I noticed that the world spawn location is slightly different – maybe 100 or 200 blocks away from the old world spawn point.
Hopefully this is something that will be resolved with the 1.9 update.
This happened to me as well. I'm using Windows 10 Edition. My world of 2 years will no longer load – Minecraft crashes whenever I try to open it. And I also can't open any of the backups of that world.
I did try loading the seed as a new world, and that worked. Doing so, I noticed that the world spawn location is slightly different – maybe 100 or 200 blocks away from the old world spawn point.
Hopefully this is something that will be resolved with the 1.9 update.