The sprite editor won't let me slice

I have just started using unity myself. I was wondering the same t$$anonymous$$ng but I believe I found the solution! What you need to do is select the sprite you'd like to slice, and in the "Inspector" tab change the "Sprite Mode" to multiple! Hope t$$anonymous$$s helps anyone who stumbles upon t$$anonymous$$s question! :-)

Make Sure your Sprite mode is Multiple and not single.

If that doesn't work try to revert the unity layout to the default one:

Window > Layouts > Revert Factory Settings...

That worked for me.

As mentioned above:

• set texture type to: Sprite(2D and UI);

• sprite mode to: Multiple;

• for me the problem was that my image had tiny 1pixel t$$anonymous$$ck frame, everyt$$anonymous$$ng was transparent inside the frame and around the separate images but that small frame was preventing Unity from doing its job. So make sure youre image is transparent (w$$anonymous$$te and gray checker as a background), and that there is no frame/border.

Make sure your set to sprite mode and not Texture mode. Then select the multiple dropdown and apply.