Am using HPPSE 4 book and power tools, following example on pages 152 to 156 for "Multiple Sample Gradient Map Adjustment"

Have finished but cannot figure out how to recombine the layers to get a color image:
- tried all combinations of layer visibility without success
- tried flattening layers without success
- tried power tool (5)RGB_Components without success

What is the right process ??

You must be using the wrong tool for the separation, or you are not completing the 5 steps. RGB_Separation does the complete separation, and 1-5 do the same thing but in parts that follow the book's outline. if you use a 'components only' tool, you get the components with no color.

The book explains all the variations.

If you have separated the image using the right tool, all you have to do is flatten it.

OK?