[LVL ED] Skybox doesn't show up correctly (see attachments!)

[Romulator]

There is something wrong with your Skybox's sizing or exported .dds format.
If I use a "side" of the cubemap as an example, which is 512x512 in size, then the length of my image is 512x6 pixels widthwise, by 512 height wise. (3072x512)

Thus, you will have 6 512x512 images, which make up your Skybox.

I only know how to do the correct formatting for Photoshop, but essentially, you just have to export the image as a .dds using an extension and not change the settings when Saving As...