The first few characters I tried worked perfectly. I tried G8, G8.1, G8.1 with G3 skin, etc, all of them worked fine. Then I got to one that didn't want to work.
Tatum HD for G8 by Mousso. The character is G8, has normal iray textures (not the newer PBR textures), uses Base Female UVs.
When I run the Mat copy it seems like it's worked properly but when I render it doesn't match the color quite right. It looks like the shell has a slight tan compared to the actual character texture. Not sure if I'm making a mistake somewhere but I can't see how as all of the other characters I've tried worked fine.
I've tried this G8 texture on G8 and on G8.1 (using the respective Mat copy), both give the same result.
The image below is the default character load of Tatum G8. G8 selected, GP added, shell added, mat copied.
Any help would be much appreciated.