Photoshop CS3 Crash at Launch ; a Solution to a Very Specific Issue

A couple of month ago, I've tried to install a copy of Photoshop CS3 downloaded from the adobe website.

Unfortunately, photoshop always crashed when I tried to start it. (an exception was thrown in some CoreFoundation code)

I first was thinking that something was wrong in my system, maybe CS3 is not compatible with my version of Leopard... But After some hours of hunting, I discovered that it was entirely my fault : remeber my hack to disable font anti aliasing, it was consisting in setting a new global preference named AppleAntiAliasingThreshold with the command :

defaults write .GlobalPreferences AppleAntiAliasingThreshold 200

This command adds the new property in the ~/Library/Preferences/.GlobalPreferences.plist file as a String and Photoshop tries to parse it as a Number thus resulting in an awful exception ; so the solution is either you remove the property or you change it's type. (any plist can be open file from the command line using the open command)