Texture disappearing

I have created a cube (polygon) with a phong shader.
It has a planar XY and a planar YZ texture, and they are mixed (Add) with a mix_8_colors node.
I have tried two times now, to bring in a third texture (XZ), but each time it disappears??
The strange thing is that color2 and color3 in the mixer node are not available anymore, but the texture that were supposed to use them, are not there.
What's going on??

  • Peter

P.s.I connected to color2, and then when the texture disappeared, I tried connecting to color3.

Hmm.. I don't know how I ever achieved this.. I CAN'T have more than one image texture at the same time.

Now I have a new problem.
Mapping the same texture on XY, XZ and YZ on a cube should be the easiet thing in the world. However, no matter what one of them always turns out pitch black, and it's ALWAYS (when we're talking three textures) the one that's connected to color2.