Today I decided to add a deathregion into an area on my map. I followed the FAQ thread exactly, double-checked everything, and munged my map. These errors appeared:
I then went back into ZeroEditor to take it out, and my ZeroEditor crashed immediately when I tried to open my world..

I then went into my LUA and took out what I had added and it was back to normal, I then munged again and still the same problem.

I then went into game and I couldn't spawn and the map was fully black and just completely screwed up. The error log produced this error:
Also, here is my LUA-
Does anyone know how to fix this? I've spent weeks on this and I don't want to have to start over.

Try a complete clean of everything (deleting all youre munged assets)
Then re-munge

Yes I did a Clean, re-munged, didn't work, then did a Manual Clean, re-munged, didn't work.

Hm....all you did was try adding a death region, correct?

Open up MAL.rgn, MAL_eli.rgn and MAL_eli.mrq in a text editor and post their contents here.

Yes, just added a death region.

MAL.rgn- MAL_eli.rgn- MAL_eli.mrq-

Delete the region in the editor and create another. This time set its type to deathregion like you did last time but name the region "deathregion". Then, add this to the ScriptPostLoad() section of your LUA:

By Editor do you mean ZeroEditor or MAL.rgn?
Because if it's ZeroEditor remember that's my problem, it's crashing it.

You didn't follow the instructions exactly or else it would be working. I don't see where you have the death region loaded in the LUA you posted. Also, ingame error logs are useless when you have munge errors, the map was broken before you even played. You MUST get by the munging stage without errors first.

Adding a deathregion is a simple 3 step process:

• Create a region
  Give it a name in Class Properties
  Load it in the LUA with the name you gave it

I did follow the instructions, I put it out of my LUA to try to fix the problem of it crashing my ZeroEditor. I took the information out of the .RGN file and I was finally able to get back into ZeroEditor to take it out. And I was referring to the project doing for weeks, not the problem. Thank everyone, especially Marth for directing me to the .RGN file.

The LUA never has anything to do with ZE crashing. If the map was working before adding the death region then it looks like you didn't follow instructions when adding it, it shouldn't take more than a couple of minutes to set up correctly. I think more often than not, these user errors are a result of folks getting in a rush and clicking on things they shouldn't or interrupting file saves.