Amnesia keeps crashing when I try to load my custom story

[Adrianis]

Ok so, firstly, I don't get the same error that you do. Not sure why, you might want to try using a default profile to load the CS, and if that doesn't work, copy your CS folder to a backup location, then un-install & re-install Amnesia

Even if you weren't getting that error, you still need to change the name of the start pos like i mentioned before, you called it ScriptArea_1 but that area type is not a script area, its a PlayerStart area. Either you used the wrong type of area, or you misnamed it. To make things easier, you can leave the name blank (using just "" in the relevant field of the .cfg) and it will default to the first placed PlayerStart area

The far more pressing issue you have though, is the size of the map, it's way way too big. It's so big, that in order to finish loading I left the room for 10 minutes, came back, and I could see the level but the game had crashed - the engine simply can't support the number of objects you had in it.

You're going to need to separate it out into separate .map files - you can do that (hopefully) fairly easily, by selecting all objects in a certain area that you want to move, then go to File > Export selection.
That will create a .expobj file which contains the objects you had selected, then on a new .map file you can go to File > Import Objects, select the .expobj file, and your previous selection will get imported. Luckily you've kept the areas pretty separated so it shouldn't be hard to export the right areas.

I hope that helps, and good luck fixing it.
Let me know if you didn't understand anything I've written