The OS X update has just installed, and seems to have broken your Mac. What do you do next?
installer
Using Installer to see what was installed, and manually removing the different components.
An app installed from the Mac App Store was faulty. How can I download it again?
For most apps which you install or update, there is extensive information about exactly what was installed. This article explains how to access that.
Among the new features of 9.1 was support for the burning of CDs in the Finder, and Finder support for switching between open windows.
In comparison with OS X, Mac OS 8 and 9 were tiny and simple. Installing or replacing a component was a minor task; here is how we did it.
Just when most software had settled on using Apple’s Installer, along came the App Store to add to complexity. And then there’s Adobe with its own downloaders and installers again. So how should we install and update software?
I confirm the claim of the Human Interface Guidelines that I am often very annoyed, and know that something is wrong.
The Eclectic Light Company 