Textures disappear in BGE Playmode, but colliders are still there? I have built a village level in Blender Game Engine, and up till today all was good. However now my Grass texture and my wood texture become Transparent when I enter the Play mode, but the mesh still has collision.

Zipped level: The level and all associated textures
Play Mode on the left vs. Material View on the right


Update: It seems to be object specific, not material specific.
I could not find the cause of the problem, but simply replacing the material with a new one worked, even if all the settings are tha same as the previous material.