Map not loading

[zhs0]

Every time I try to open my custom map, it loads for a while then gives this error:

Can someone tell me how to fix this?
Update: I've found the source of the error, an impossibly large concrete wall off the boundaries of the map. Wow.

[TheGhostSniper]

Hold on, let me look up that error code..
...
Alright, back. I found the reason.

Spoiler: Show More

The map was unable to load in the allowed period of time (15 seconds).

Problem is connected with expensive calculations during map loading, for example: "shadows" in the map are calculations, global illumination calculations, snow generation, wall texture generation, too high "power" parameter of Lamp objects.

Copy-pasted from the Advanced Level Editor Manual.

Well, to fix that bug, try decreasing the "Power" parameter in the lights. If that doesn't work, try decreasing the amount of objects in the map. I hope I helped!

[zhs0]

Well, it is still not working.
I changed the power of all lamps down to 100 and deleted almost half the map. It still loads and gives the same error. It started when I was building a cannon with a lot of movables and regions stacked on top of each other, but that was part of the area I deleted.

[Kiriakos Gr96]

try to put the lamps power to 30 and check if it works.

[zhs0]

Nope. Still not working. I don't think it has to do with the lamps, I changed their power to 30, 10, and 0. The map still loaded and gave the error. That means that the things causing this error are the shadows, snow, or the wall textures. I cannot find a way to get rid of snow on the map (there is no snow engine mark) and I don't know how to fix the shadows and "wall textures".