Image::Magick prints returnValue while Read

[klickmeister]

Unfortunately (on my server) Image::Magick prints the returnValue while reading an image.
I don't have any Idea how to abort this.

----
#!/usr/bin/perl
use Image::Magick;
$image=Image::Magick->new;
$image->Set(magick => 'GIF');
$image->Set(size => '1024x768');
$image->ReadImage('xc:white'); # prints '1' !!!
$image->Write("pascal_test2.gif");
----

Version: ImageMagick 6.5.3-3 2009-06-09 Q16

Any ideas?

[magick]

We cannot reproduce this problem. You may need to upgrade your version of ImageMagick. The current version is 6.7.0-7.