I fixed it.. So my backups were either loading into an empty world with everything reset or not loading and saying corrupted. I downloaded one of the corrupted ones then went to c:/users/user/appdata/roaming/.minecraft/saves/mysave and copy and pasted level.dat and level.dat_old to a new place, then deleted level.dat and rename level.dat_old to level.dat .. then loaded the save .. and it works.. now I made a copy of this save file for later.
I have 1.8 and I am getting this problem I have updated java reinstalled minecraft everything it wont go away plz help
Having the same issue with my realm on PC as of about an hour ago, my world has a lot of addons though.