Help with missing textures in the level editor

[Solid_Oh_My_Goth]

For a school project I have been making a custom level and put my custom textures in the level editor. The only problem is that I am getting a red wall for the custom textures. I don't know if this has to do with either the software I used to make the textures and the color pallet or if something is just wrong with the level editor. Any help would be greatly appreciated!

 

[SeventhSentinel]

This could be one of several problems:

• Your map is a pk3, and the textures are included with it, but they are in the wrong folder within the pk3.
• Your map is a wad, and the textures are included with it, but you either forgot to add the TX_START and TX_END markers or named said markers incorrectly.
• Your textures are in a file separate from your map, and you forgot to include them as a resource when you created your map.
• If none of these apply, try converting the textures to Doom format, assuming they are not already using that format.

If none of these are the problem, then I will need more details to try to help you troubleshoot.