Everything is alright in the script and I really know the difference between includes (using 3DGS for nearly a year

).
The problem really bothers me. I can't even add models, sprites or anything because after I click Add Model from right-click list, it should show ALL subfolders ,right? No. It shows ONLY the subfolder in which the level is which normally contains levels only (no models or sprites ..etc.)
Nice tutorial btw

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EDIT:
When you run the map compiler it creats several extensions branched off your level name. You wan map.wmb for loading a level.
Do you mean that .$$M thing? Even map compiler compiles into it. What is it anyway? I used to make levels ,but there was no such thing