Custom Scenario Won't Load

[Flash1]

I took my old Earth Map (Huge) and redid Asia. I converted plains Jungles to grassland. I added in a few DLC and G&K Civs. I did all of this on my Desktop. However, when i try to load the scenario crashes on loading. It says Civ V has stopped working. Any ideas why?

Moderator Action: Moved to C&C.