There has to still be something wrong with my BMP's.
This is what I am using:
Diffuse: 1024x1024, 32 bit, 72 dpi, saves as 4 mb
Normal _N: 1024x1024, 32 bit, 72 dpi, saves as 4 mb (this is 128,128,256 - completely flat)
Alpha _A: 1024x1024, 8 bit, 72 dpi, saves as 1 mb (this image is all black, so all of the terrain atlas should show on it, but it's not)
Specular _S: 1024x1024, 8 bit, 72 dpi, saves as 1 mb
Environment _E: 1024x1024, 8 bit, 72 dpi, saves as 1 mb (I have this as 96,96,96, all grass)
So neither the _A.bmp nor the _E.bmp are being recognized. The diffuse map is, since it shows up in the terrain as the color I assigned it in Photoshop.
I must be missing something really obvious, but I can't put my finger on it.
Alpha is all black, correct? So if it's all black, the background terrain should show through, right?
This is no longer a bug, this should be in the help section.