Unity - Sprite Packer is disabled

Question

When I open "Sprite Packer" window I see info "Legacy sprite packer is disabled. Enable it in Edit>Project Settings>Editor". So I open this settings, but there "Sprite Packer > Mode" is set to "Always Enabled". But in Sprite Packer window I still have previous info and I can't use it.

So why I can't use it, and how to turn it on?

Thank you.

Answer 1

Goto Edit > Project Settings > Editor

Just figured out that somehow Always Enabled in Sprite Packer > Mode is not working, but you can use Always Enabled (Legacy Sprite Packer).

This is a workaround for Unity 2017.3.0f3

Answer 2

I believe this is because Unity detects that you have no Sprite Atlas assets.

Create a new Sprite Atlas object in your Assets. Open the Sprite Atlas and look under Objects for Packing. Add your Sprites/Images (or folder) here then click Pack Preview.

Now you don't need to use the legacy Sprite Packer tool (in the Window menu).