Texture Bake Problem EDIT: I dont know how make myself more clear. I have a plane in the scene, this plane have 1 material and in this material I have 3 diferent textures painted (1 gras and 2 rock textures). I am trying to bake this textures to make one unique png texture, but every time I hit the bake button the result is a white image. I need to know what I can do to result be like the material in the view port, or what I am doing wrong to the result be this white image.

if I dont make myself clear yet, you can open the attached file and hit the bake button to see the result and see in the view port the way the texture is painted in the object.

I am trying to bake this textures in to one png image, but every time I bake the result is a white image, I see some tutorials but all are in cycles and I am using the blender render, can anyone help me please?

the blender file is in this link:
https://www.dropbox.com/s/jv5ipxk05k5ilq4/TEXTURE%20BAKE.blend?dl=0

you can open and try to bake to see what is happening if I dont make myself clear..
Big problem is that you have a node material with these textures set up in Blender Render, and trying to bake. Baking in Blender Render doesn't work with nodal materials as far as I have experienced, but that is not a hard thing to fix here. I have a file for you to test baking just color to the diffuse in Cycles, and the bake target is a non-connected image node representing the blank image in the 2d editor window. Press bake and you should see it clear and then return a result like you expect.A screen shot for you to see what I did.