An object disappears when I start the game engine. How do I fix this? I am working on a game, and one particular object disappears when I press "P" to start the game engine. The scene this problem is occurring in was copied from another scene, and this problem didn't happen in the original scene that I copied from. Changing the normals had no effect, invisibility is turned off in the physics, and this object has no keyframes. All the other objects in the scene are visible. I am using version 2.69 of Blender. Any solutions you can provide would be greatly appreciated.
The object might be located somewhere else. So it is not visible to the camera.

Check the existence and the location with this code:

import bge

name = "Cube"

object = bge.logic.getCurrentScene().objects[name]
print("Object", object.name, "is at", object.worldPosition)