A bit of a head scratcher.
The object is a FBX. It has 2 uv channels, uv1 as you can see is completely empty and uv2 has the uv.
I cant figure it out so any help would be awesome!
I've tried an obj, no luck.
I doubled check in maya and UE4 to see if both channels are working, they are.
I made a box, made 2 uv channels, exported and imported it into 3dcoat and no luck.
I tried importing an existing layered psd into 3dcoat on an other object with the uv channel issue and the psd didnt even show up.
I give up.