Problem editing interface

[akiraxxx123]

I have a problem while saving an interface, when I finish editing and entering the game, it appears black borders, how can I save it perfectly?

[Spirited]

You need to save it with an alpha channel.

[zakkwilde_17]

You need to save the archive with explicit alpha

[Soulfly25]

use DXT3 instead of DXT1

[akiraxxx123]

Thanks, guys.