Well this is the script I tried (you will notice that it's the same code from Workshop 2, except that it's been saved under another name):
////////////////////////////////////////////////////////////////////
#include <acknex.h>
#include <default.c>

var a = 0;
var b = 0;
var c = 0;

/////////////////////////////////////////////////////////////////////

PANEL* panDisplay =
{
digits(35, 10, "a = %0.f", *, 1, a);
digits(35, 19, "b = %0.f", *, 1, b);
digits(35, 28, "c = %0.f", *, 1, c);
flags = VISIBLE;
}

/////////////////////////////////////////////////////////////////////

function main()
{
video_mode = 7; // create a program window of 800x600 pixels
screen_color.blue = 150; // and make its background dark blue
while (1)
{
c = a + b;
wait (1);
}
In the folder where this script lives there's a file called OUIETERR.txt, and this is what's written it (it's the same as the error message I get when I test the script):

< #include <acknex.h> #include <default.c> var a = 0;>
ATEST.WDL 5:0 (): Script error - no C code in .WDL scripts!

< PANEL* panDisplay = {>
ATEST.WDL 12:0 (): Parameter unknown PANEL* bad keyword in { }

< digits(35, 10, "a = %0.f", *, 1, a);>
ATEST.WDL 13:0 (): Parameter unknown digits bad keyword in { }

< digits(35, 19, "b = %0.f", *, 1, b);>
ATEST.WDL 14:0 (): Parameter unknown digits bad keyword in { }

< digits(35, 28, "c = %0.f", *, 1, c);>
ATEST.WDL 15:0 (): Parameter unknown digits bad keyword in { }

< flags = VISIBLE;>
ATEST.WDL 16:0 (): Parameter unknown flags bad keyword in { }

< function^main() {>
ATEST.WDL 22:1 (): Script error missing bracket

Could you please tell me what this means?