When creating a tarball GNAP first uses catalyst to make an iso image. Catalyst creates a filename.iso.DIGESTS file that isn't removed by GNAP when its finished with the filename.iso file. An example for me would be that I now have a gnap-2.0-20060926.iso.DIGESTS file left on my system along with the freshly created tarball.
Created attachment 98342 [details, diff] remove iso.DIGESTS files along with iso image
The GNAP project has been discontinued, its removal was acknowledged by steev. If you need to, you can contact the Gentoo Embedded project; more information about the Gentoo Embedded project can be found on the following link: http://www.gentoo.org/proj/en/base/embedded/ This removal happens as part of project cleanup by the Gentoo Council's members.