Hi,
Sorry about that. Replace the the code in the shader file with the following:
Code:
uniform sampler2D BaseTexture;
uniform sampler2D DetailTexture;
void main (void)
{
vec4 detailColor = texture2D(DetailTexture, gl_TexCoord[1].xy);
gl_FragColor = (texture2D(BaseTexture, gl_TexCoord[0].xy) * detailColor.r) * 2.0;
}