As someone here reported, there have been more than one version of the Book Share unpack tool for Linux. The version which has reliably worked for me since the tool was first released was just that--the first release. It is dynamically linked, yet it has worked on FC1, FC2, FC3, and FC4, perhaps longer--I don't recall. It is considerably smaller than the current, statically linked executable which seems to be failing left and right. If you want to try the release I have, you can find it on my ftp site: ftp://ftp.rednote.net/goodies/AT/bookshare Be sure to download this in binary mode.