I was making a custom skybox for my HL map pack and came across a strange problem.
I was following a tutorial (https://twhl.info/wiki/page/Tutorial%3A_Custom_Skyboxes_for_Goldsource) as directed and ended up with my custom skybox in the map list (even has one of the sky box images as the thumbnail) HOWEVER! Once selected and my map is running it just used the default desert skybox. Anyone know why this is happening and how to fix?