InstallBuilder allows you to create easy-to-use installers for Mac OS X, Linux (x86/PPC), Solaris, AIX, HP-UX, FreeBSD, and Windows applications. The generated installer for an application has native look and feel and no external dependencies. BitRock installers can be run in GUI, text, and unattended modes. It has free, fully functional licenses for open source projects.
G. These installer builders are just not needed on the Mac plattform. Either go with the system installer or, for normal application, use Drag&Drop install.
So, this application is just plain useless. (Version 4.5.3)