No license image on Tiger

When I convert a DMG to add a click-through license dialog, there is a nice image on the background of the license dialog when viewed on Leopard, but the image is not there when the DMG is opened on Tiger. This occurs whether I convert the dmg on a Leopard machine and then view it on Tiger, or just create it on Tiger.

Is this simply a limitation? I would like the license dialog to look the same as on Tiger if that is at all possible.

Scott

The look of the license dialog is controlled by the version of Mac OS X that you have, not by the contents of the disk image.