Power Macintosh: Mac OS 7.6 Installer Error Message

I have a newer Power Macintosh (4400, 5500, 6500, 7300, 8600, 9600). I reformatted my HD and reinstalled 7.6 from the CD, but I am getting a message that says "This software does not work on this Macintosh model. Use the latest installer to update this disk for this model." It worked before, what is wrong?
To reinstall from the CD, you must run the Installer on the main level of the CD. If you go into the "Software Installers" folder, and install the the contents of the Mac OS 7.6 folder, but do not install the contents of the 7.6.1 folder, you will get this message. This is because system 7.6 was not qualified on any of these computers.
Published Date: Feb 18, 2012