After save and quit, Build world crashes to desktop when loading

Saved my build world and quit to the main menu. when I attempt to go back into my world, minecraft crashes to desktop as soon as it tries to load the world. I have a lot of build time in this world and would really like to get it working again so I dont lose all of my progress since my last file backup. There is no listed errors for the file and the launcher does not indicate it is corrupt.