"Custom Story" creation (I need help)

[13irth]

So I love the hpl3 engine and level editor and everything. I bookmarked the documentation page for it too.
I have one simple problem that I would love to get solved...

How do I get my map to work?
I made a simple plane, put a light source over it, and put a player start on it.
Saved it to a folder named "ExperimentalMap" inside a "custom_stories" folder in steamapps\common\SOMA

Then I changed the file in My Documents\my games\Soma\Main called Dev_user_settings.cfg ---

I simply changed this part: <Map File="map1.hpm" Folder="custom_stories" StartPos="PlayerStartArea_1" />

and then I ran SomaDev.bat

and it would give me a few errors and the map simply wouldn't load proper or at all.

Can you guys tell me what I did wrong and how I can fix it? I appreciate it a bunch.