Mac book Pro won't start after installing a update, Mac book Pro won't start after installing a update

I installed a update on my Mac book pro, now when I try to start it, it'll come up with the apple logo and a loading bar below it, gets to about 1/4th and shuts down every time.

Hi Jacobmitchell92,
If you are unable to start up past a grey Apple screen after doing a software update, you may find the following articles helpful:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
OS X: When your computer spontaneously restarts or displays "Your computer restarted because of a problem.
http://support.apple.com/kb/TS4636
Regards,
- Brenden

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Send Apple feedback. They won't answer, but at least will know there is a problem. If enough people send feedback, it may get the problem solved sooner.
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Logic pro 9 additional content won't install and iMac 27" late 2012 won't start in Safe Mode

Hi,
I have bought Logic Pro 9 and have encountered problems installing the Additional Content pack. I am using late 2012 iMac 27" (with fusion 3TB drive) and OS X Mavericks (10.9.1).
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Install on my Core2Duo 17" MacBook Pro went flawlessly, but install on my 8 Core Mac Pro suffered this problem. Many thanks for the solution Don, it worked for me ;-)
I am trying hard to supress an ironic chuckle though, reading other posts in this thread .... suggesting that people should call Apple Tech Support and expressing incredulity that people weren't doing this as their first option.
Well I can say say that after several calls to Apple Tech Support, amounting to several hours on the phone, and well over an hour on the phone with them today, I was informed that this problem is a known bug, and that Apple are working on a solution. They couldn't tell me what the bug is, what machines are affected, or what else might trigger it, or when a bug release might be due.
Their troubleshooting steps basically involved various reboots, repairing disc permissions, reseting the user home directory via terminal, booting up in recovery mode (but not safe mode as per this solution) trashing various preferences files, and, as a final step, uninstalling and reinstalling from scratch.
Only when all that failed was I told that there is a known bug that Apple are working on.
I came here to see what the community was saying, as the Tech Support guy did say there was likely to be some info on the forums. Lo and behold, a solution is posted and it works.
Why are Apple's Tech Support (in the UK at least) not aware of this?
Oh well, at least I'm up and running on my Mac Pro now.
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Message was edited by: apple is awesome

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Mac book Pro won't start after installing a update, Mac book Pro won't start after installing a update

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