I've the same problem with A7.07.6.
I've these lines in my script :

#include <acknex.h>
#include <default.c>
#include "mtlFX.c";

and assigned fx_bump action to the model in WED,

I've also copy the "mtlFX.c" to my working folder
but still not work, my model shown in black color.

I've tried to rename my model to "marine.mdl" and
copy it to ..\project\shadertest\ directory and it
work perfectly, so I think it isn't a bug, am I
missing something? I remember it works in previous
version.

Anyone have a glue?

Thanks.