It seems the texture at fault is in Sword Valley, Tephra is fine. I'm looking into which texture it is. I'm thinking two of them have the same name. After I find the problematic texture in my folder, I'll re download the pack again to test again.
Edit: There are two "tex1_512x512_m_ebabb04437e61464_14." One is in Sword Valley, and one in Eryth Sea. Each of them has all their mips and everything, so I'm suspecting this issue isn't on my end after all.
Edit: There are two "tex1_512x512_m_ebabb04437e61464_14." One is in Sword Valley, and one in Eryth Sea. Each of them has all their mips and everything, so I'm suspecting this issue isn't on my end after all.