ChannelCombination: Invalid source color space

[mlamb1]

I am trying to make a different HaRGB mix and get the error:
 ChannelCombination: Invalid source color space

I have used the same data on prior CC mixes, using 90%/10% HaR, and 60%/40% HaR.  This time I was trying a 30%/70% HaR mix.  I used PixelMath prior to mix the Ha and R, as I did previously to get the HaR blend which was mapped to R in CC.

All of the underlying sources, Ha, R, G, B were cropped to the same dimensions.

What is causing the error?

[oldwexi]

One of the 3 views for ChannelCombination has been RGB and not Gray.
Channel Combination wants mono images (gray) and not color (RGB) images as input.
Check on the head-bar of each of the 3 images if there is Gray or RGB mentioned.

Gerald

[mlamb1]

Thanks!  That was it, though I do not know how it happened.

I created my HaR30 exactly like it created HaR60, & HaR90.  I even used a new instance of the PixMath (w/ changing ratios and output name).

I change it to Grey by using the CIE Lum button.  Is that the best way?