Hi ParamountJon,
Thanks for visiting Apple Support Communities.
If your Mac stopped responding during an OS X update, first see if you can force quit unresponsive applications:
OS X: How to quit an unresponsive application using Force Quit
http://support.apple.com/kb/ht3411
If you're not able to force quit applications, you may need to restart the computer by holding down the power button. I recommend performing a Safe Boot when you start up again:
Mac OS X: What is Safe Boot, Safe Mode?
http://support.apple.com/kb/ht1564
Safe Mode is a way to start up your Mac that performs certain checks and prevents certain software from automatically loading or opening.
To start up into Safe Mode (to Safe Boot), follow these steps.
- Be sure your Mac is shut down.
- Press the power button.
- Immediately after you hear the startup tone, hold the Shift key.
The Shift key should be held as soon as possible after the startup tone, but not before the tone.
- Release the Shift key when you see the gray Apple logo and the progress indicator (looks like a spinning gear).
After the logo appears, you should see a progress bar during startup. This indicates that your computer is performing a directory check as part of Safe Mode.
For more information about incompatible software, see this article:
OS X: About the incompatible software folder
http://support.apple.com/kb/ht3258
All the best,
Jeremy