Please include the code you are using to initiate the scan. Are you using PHP4 or PHP5? Did you pass a valid image to the scan function?
The code autodetects what image type you are using if GD2, then defaults to ImageMagick. So if you are using an invalid image format, then it will attempt imagemagick and then die.
I admit that this should throw something like "Image is not a GD2 or...
I have tried installing BarBara, but it does not seem to work properly.
I am running Debian Unstable on AMD64 platform.
Php5 + Imagick installed on apache2.
This is the output that I get:
Dictionary Loaded..Image Loaded...
Fatal error: Uncaught exception 'ImagickException' with message 'Can not process empty wand.' in /home/bro1/projects/sekretore/aaa/barbara/barcode.php:216...