Mac OS X 10.3, 10.4: "Nothing to install" alert when trying to install Classic Support

If you're trying to install Classic Support from your Mac OS X 10.3.7 or Mac OS X 10.4 Install disc that came with your computer but get a "You cannot continue. There is nothing to install" message, fear not. Just follow these steps to install Classic Support:

1. In the Installer, click the Customize button.
2. Select the checkbox next to the language you want to install.
   
   Tip: Make sure that the checkbox is selected, and that "Install" appears in the Action column as shown below, before you proceed. Otherwise, you will continue to see this alert message.
   
   
3. Click Install.

Note: Do not click the "Easy Install" button. If you do, the same message will appear.