First of all, MacKeeper is total, utter "garbageware"/malware that may have damaged your entire OS X system.
DO NOT USE ANY SO CALLED APPS CLAIMING TO "CLEAN", "OPTIMIZE" OR "SPEED UP" YOUR MAC!!!! EVER!!!!
Completely uninstall MacKeeper
http://applehelpwriter.com/2011/09/21/how-to-uninstall-mackeeper-malware/
Apps like MacKeeper or any other maintenance apps like CleanMyMac 1 or 2, TuneUpMyMac, SpeedUpMyMac, MacCleanse or anything like these apps, installed on your Mac, while they appear to be helpful, can do too good a job of data "cleanup" causing the potential to do serious data corruption or data deletion and render a perfectly running OS completely dead and useless leaving you with a frozen, non-functional Mac.
Plus, these type of apps aren't really necessary OR needed. They really aren't.
There are manual methods to clear off unnecessary data off of your Mac that are safer and you have complete control over your Mac and not just leave a piece of auto cleaning software in charge of clearing off data off of your Mac. Their potential of causing OS X issues outweighs the implied good and benefits these types of hard drive or memory "cleaning" apps are written to do.
These types of system 'cleaning" apps are very poorly written and are really a scam to rob newbie and novice Mac users of their hard earned cash for a poorly written maintenance program that will do much more harm to a perfectly normal running OS X system than the good that the app developers purport these types of apps will do.
Plus, the software companies that write these apps make it hard to easily uninstall these apps if something DOES go wrong and these apps work in a way where you have no recovery or revert function to return your Mac back to its former, working state in the event something does go wrong.
It is best to never, EVER download and install these types of apps.
The risk to your system and important data is too great a risk!
You really need to do completely uninstall/delete all of the CS3 suite and reinstall it. I had to do this each and everytime I upgraded my system OS to a brand new version.
If this still doesn't work, then MacKeeper may have already done its damage and in that case, you need to backup either all of your important data or your entire system and you need to erase and reformat your hard drive and completely reinstall your OS X, applications and restore your data.
Good Luck to you.
