Textures Not Showing Arnold 5 RenderView Also Grayscale

[Anonymous]

Problem 1: I am using a color checker map similar to this one and the colors won't show up.

Problem 2: The texture I'm using shows up with the lambert shader, but not when I use aiStandardSurface. It seems invisible. See the pic with the pink plane.

I've searched everywhere and can't find the problem. 

[Stephen.Blair · Accepted solution]

problem 2) the texture is connected to the weight, not the color, of the Standard Surface

[Anonymous]

Thanks so much. That was actually the problem on both issues. So simple, but so illusive.