This update delivers improved support for installing software updates and is required for any future Mac OS X updates. Important: To install the Installer Update you must have the Security Update 10-19-01 installed
I guess I accidentally deleted my version of "Apple Installer" - so I thought I would download this one. The only catch? it's a .pkg file. So guess what? You need "Apple Installer" installed in order to installer "Apple Installer"! Catch 22!!
Summary
If you need it - you can't have it! If you already have it - you don't need it! Did the government set up this website?