Textures not working after building project [SOLVED]

Does anybody know why in some projects when I put some textures for the ground, they will look nice when editing and they won’t show when built?

I think this happens to me when I try to use a texture and then I try to edit that texture and load the new version of the same texture in the game.

SOLUTION

Don’t name textures folder with the same name than other scenery. It may create conflict.