We ship LuxRender-1.0-16.fc20 and 1.3.1 is available upstream. The latest LuxRender.spec is 1.3.1 but does not build. I've uploaded an updated LuxRender.spec that builds and seems to work correctly within Blender at: http://fcami.fedorapeople.org/srpms/LuxRender.spec A scratch build is available at: http://koji.fedoraproject.org/koji/taskinfo?taskID=6347275 I've requested commit rights to LuxRender in pkgdb to fix rawhide at least, and f20 if that's OK too.
LuxRender-1.3.1-4.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/LuxRender-1.3.1-4.fc20
Package LuxRender-1.3.1-4.fc20: * should fix your issue, * was pushed to the Fedora 20 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing LuxRender-1.3.1-4.fc20' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2014-0093/LuxRender-1.3.1-4.fc20 then log in and leave karma (feedback).
LuxRender-1.3.1-4.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report.