Wikimedia Bugzilla is closed!

Hi ... 
I have problem with resizing image ... when I use the script [[image:learn.jpg]]
it works fine and it shows the image with its original dimensions ... but when I
tried this [[image:learn.jpg|left|300px]] i got the following error:
"Incomplete GD library configuration: missing function imagecreatefromjpeg"

so I installed ImageMagick-6.3.3-Q16, and I put 
$wgImageMagickConvertCommand ="C:\Program Files\ImageMagick-6.3.3-Q16\convert.exe";
in the localsetting.php instead of 
$wgImageMagickConvertCommand ="/usr/bin/convert";

but now when its loading the page it just shows a rectangle (that there will be
an image) and after loading nothing appears... no image at all !!!!

waiting for your help 
regards,