xdm background with qiv

[Andras Lorincz <andras.lorincz@gmail.com>]

I'm trying to set the background for xdm by typing in Xsetup this:

if [ -r /home/lorand/Wallpaper1024/download3.jpeg -a -x /usr/bin/qiv ]; then
    /usr/bin/qiv -z /home/lorand/Wallpaper1024/download3.jpeg
else
    /usr/bin/X11/xsetroot -solid DarkBlue
fi

it doesn't work altough the condition in the if statement is true. If I execute

/usr/bin/qiv -z /home/lorand/Wallpaper1024/download3.jpeg

in a terminal in X, get this message:

qiv: Your root window's visual is not the visual Imlib chose;
     qiv cannot set the background currently.

What is the problem?