I have this problem while working on some skyboxes for Doom, when I made the SKYBOXES lump on the WAD files inside the "basev" directory, some of them show properly (DOOM Skyboxes), but the DOOM2 skyboxes doesn't show at all, here's a screenshot of it. I think the problem is in the way the textures are loaded from the lump, because the DOOM skyboxes come first than the DOOM2 skyboxes in my SKYBOXES lump, if you want I can also attach the SKYBOXES lump I made.

You should create two different SKYBOXES scripts, one for Doom 1 and one for Doom 2 in their corresponding wad0.wad files. Textures themselves correspondingly should be under basev/doom1 and basev/doom2.

Nope, that doesn't seems to be working neither Janis <!-- s:( --><img src="{SMILIES_PATH}/icon_sad.gif" alt=":(" title="Sad" /><!-- s:( --> , if you separate the syboxes by game and start Doom 1 episode 2, the skybox shows like the screenshot but all red. I still think it's something with how they are loaded from the lump.

Can you attach the SKYBOXES and MAPINFO scripts.

Sure! Here they are:

Seams to work fine.