Hello. 

Recently, as part of a Minecraft project, I imported a large 6.5 gigabyte world file into Minecraft.
Minecraft recognized the file and began to load it, and it got stuck in some sort of conversion state.
A little while later, Minecraft crashed. I am unable to enter into this world file. Whenever I try to load the file, it continues to crash. I've tried reinstalling it along with clearing out cached data and other files which could prove to be troublesome.

Please help!

Simulation Distance is set to 4 chunks, Seed of the world is 0, and all Experimental settings are active.