Black lines around body

Hi. You may have saved files without generated mipmaps. Resave all dds maps with them

I cant really tell from the files if mipmaps were generated, so theres no need

Every map that was made in dds
Look through the saving settings for "mipmaps"

While the shadow map is not made correctly, it is a bug with s4s, i get the same result after re-importing maxis shadows in maxis meshes as well.

For now, you can either remove it or convert it to dds.
If you'll do the latter, adjust a few things first:
- first, its too strong, you can see it even in cas. Export a shadow map from some maxis short and check what area it contains. As you see, not full legs, just a bit of the shadow the garment casts on the body. Note that the borders of those areas are pure white, this is why theres no sharp transition like you see in the ankle and pelvic areas below;



There are other, completely unrelated issues:
- there are two vertex colors and neither of them is correct. Shorts should be painted with 00FF00, so delete both color attributes and create a new one with 00FF00

- if the future, be conscious of the polycount. These tiny shorts with no fine details have 8,5k tris, which is more than maxis's most complex hairstyles. It is not a problem now, but would be on bigger garments. There are three things you can do to avoid this: a). do not use Remesh, it really only makes things worse. As a result of it, a lot of vertices are created along borders of patterns, which increases the polycount and makes the mesh morph and move worse; b). do not lower Particle distance too much. Your garment has no fine details like folds, lowering particle distance from 20 to 10 wont change much, so no need in doing this; c). Close holes by collapsing them. Select an edge loop, press E to Extrude, then S to scale down, then M - Collapse, then unwrap it. This way the newly created geometry will has 4 times lower polycount than it does right now.