What this mean? "could not rasterize because the pixel data for this layer is not"

[Guest]

I've taken a color picture and made it black and white by doing the following: Layer>New Adjustment Layer>Hue/Saturation. I brought the saturation down to -100.  The pencil is selected and my foreground color is black.

When I try to select the flowers in my picture to bring out their color (within the black and white image), I get a circle with a black line thru it and the error message "could not rasterize because the pixel data for this layer is not directly editable".  The steps I followed are working for most of my team but some of us are getting this error message.

Any idea why and/or how to fix it?

[Chuck Uebele · Accepted solution]

You might have the adjustment layer selected, but not its mask.  Make sure you select the mask to edit it.

[Guest]

Ah, thank you!  I didn't have the mask selected. So once I did select it, the color came thru like magic. 

[sab3rahmed]

Thanks much! ❤️ 

[Isabel5F94]

how do you select the mask?

[i. m. 15D5]

Just by clicking on the mask itself. It is the black or white icon in the Layers panel next to you picture icon.