Refer to
THIS Post (click on link) & check the link for Jum's build (it's one of the last I think point 8 or so.) His version is a beta but it does not require any installation. You download the dmg & just drag & drop the LW program wherever you want it to be. See if that works. If it does then ... something's mucking up your installing. Did you uninstall the previous version before installing or install over the top?