Does a simple GD program like the one at the top of the perlpod documentation of GD work? I.e. that one:

            use GD;

           # create a new image
           $im = new GD::Image(100,100);

           # allocate some colors
           $white = $im->colorAllocate(255,255,255);
           $black = $im->colorAllocate(0,0,0);
           $red = $im->colorAllocate(255,0,0);
           $blue = $im->colorAllocate(0,0,255);

           # make the background transparent and interlaced
           $im->transparent($white);
           $im->interlaced('true');

           # Put a black frame around the picture
           $im->rectangle(0,0,99,99,$black);

           # Draw a blue oval
           $im->arc(50,50,95,75,0,360,$blue);

           # And fill it with red
           $im->fill(50,50,$red);

           # make sure we are writing to a binary stream
           binmode STDOUT;

           # Convert the image to PNG and print it on standard output
           print $im->jpeg;
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gdtest.pl > test.jpg
xzgv test.jpg
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Hi, sorry for lateness, I had an urgent problem that had to be fixed ASAP, but thanks a lot for the reply.

I did test the script above, and it does produce the image correctly, I just tested again my implementation for the Catalyst::Plugin::Captcha, but has the same problem, It produces a black image...

Do you have any idea why this might happen?.

Thank you again for the help.

-confused elf.

Do you have any idea why this might happen?
Because something is broken :) What? It could be anything, so you'll have to test things one by one until you find the answer.

You said jethros program worked for you, but did you test it as the same user and with the same enviroment as your CGI