I am having a strange issue with the Spine Unity Runtime (4.1) where after the atlas and texture are imported into Unity. Clicking the "Apply Regions as Texture Sprite Slices" does not apply any slices to the texture.
Strangely, I was able to get it to slice once, but now it does not slice at all. It highlights the sprite in unity as if it was updated, but there are no slices.
Anything specific I am missing or could be missing?