Description of problem: Could you please update lilypond to the latest version (2.11.65). It seems to be quite close to become the next stable release.
Builds fine on F-10, issue in rawhide. Chasing it down.
Meanwhile, lilypond 2.12.0 is available at: http://download.linuxaudio.org/lilypond/sources/v2.12 NB: currently, "v2.12" is the actual gzipped tarball, not a directory containing it. I guess, somebody just copied the tarball there without checking that the directory existed. Rebuilding the source RPM with the tarball of the new version worked for me, albeit on F10.
The tarball URL has been fixed: http://download.linuxaudio.org/lilypond/sources/v2.12/lilypond-2.12.0.tar.gz
lilypond-doc-2.12.0-1.fc10,lilypond-2.12.0-1.fc10 has been submitted as an update for Fedora 10. http://admin.fedoraproject.org/updates/lilypond-doc-2.12.0-1.fc10,lilypond-2.12.0-1.fc10
lilypond-doc-2.12.0-1.fc10, lilypond-2.12.0-1.fc10 has been pushed to the Fedora 10 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update lilypond-doc lilypond'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F10/FEDORA-2008-11821
lilypond-doc-2.12.0-1.fc10, lilypond-2.12.0-1.fc10 has been pushed to the Fedora 10 stable repository. If problems still persist, please make note of it in this bug report.