Update: I’ve just uploaded v0.7b of the installer. The only change is a small bugfix in the installer itself, and only very few people ran into this. If you could successfully install either The Homebrew Channel or BootMii, there is no need to reinstall again, both are unchanged compared to v0.7. If you had problems before, please try again with this version. The download links and the integrated update feature in HBC itself have been updated for this bugfix.