I guess I'll revive this thread and hope others might still have an idea about what's going on. I can't consistently recreate the problem. I'm pretty sure Photoshop CC (2018) definitely creates that color shift seam. I thought GIMP, with the Normalmap plugin, was safe. But it seems that if I work the file too much, to get a deep normal map, the resulting file creates that color seam. I'm starting with the file from EVB (Thanks for allowing us to use your work!). And although it looks like the body is created from one flat, single, image, I wonder if it's not divided into 3 separate parts: Head to Waist, Waist to Thighs, Thighs to Feet. And for some reason I'm getting a different middle (or top and bottom) depending on something I'm doing wrong. I'm 99% sure the problem arises in the normal map. If I create my Diffuse and Specular files and use someone else's Normal, it works without a problem. It's when I create my own normal, using the Diffuse as a starting point, that I end up having trouble. I've literally spent the last 3 days troubleshooting... trying to find a workflow that will consistently create a good set of files before I jump into creating my mod. So I'm just throwing this back out on the stoop to see if the cat licks it up. Any help or suggestions would be so appreciated.