Texture Dark After Adding Specular

[gamecreator]

I have a material with a diffuse texture and another grayscale texture, which I'm using as both normal and specular textures. When the shader is just diffuse, the texture looks fine. When I switch it to diffuse+normal+specular, the texture gets dark (same with just diffuse+normal). Is there something else I need to do to correct this? I tried saving the textures with different compression types but nothing changes it so far. There are also strange gray artifacts.

[Einlander]

Are you using a grayscale image as normal? If so leadwerks doesn't support that.Either generate a normal from the diffuse, or try to use the displacement/tesselation for the grayscale image.

[gamecreator]

Ah! Good catch. I'll try that.