The Mac installer now has the somewhat long winded name ifeffit-1.2.8-Mac10.4_horae60_pkg.dmg . I was wary of changing the name before as it will break the link on cars, but since you are hosting the various installers on cars as well, it would probably be best if to have a clear name so one could be sure the version is the same on both. I thought it might also be prudent to have the installer for 10.3 check the os version (using the gestalt value in the installer) so that incompatible versions don't get installed (the 10.3 perl and Tk will I think break on 10.4). I should do the same for the 10.4 version as well. I may be able to make the same sort of check for the 10.3 package installer as well using the package you built. I can't, however, update the older installer to the new horae version as I don't have a 10.3 system to build it on.