There’s no dmg installer yet. If you want to give it a try, here you go:

  • download this archive: kompozer-20090310-mac_universal.zip
  • unzip it in your "Applications" folder
  • backup and remove your profile folder (~/Library/Application Support/KompoZer iirc)
  • open a terminal and use the following command to start KompoZer: /Applications/KompoZer.app/Contents/MacOS/kompozer-bin

I’ll upload a dmg installer on SourceForge as soon as possible.
Don’t try to install any langpack yet, they need to be updated for this version.

Please do NOT report bugs in this blog, use the SourceForge tracker or one of these forums:

Ragnaar, thanks again for this great job!