title: OSX Messages executable
body: <p>So I know it is a weird question but basically I copied the Messages app onto my desktop and it ran, but when I changed the executable file inside of the .app, it crashes with Illegal Instruction: 4, which I know is about DYLD, looking into the executable AVCore is hard-located at /Applications/Messages.app/Contents/Frameworks this leads me to ask if the Illegal Instruction is because the AVCore framework is looking for the renamed executable in the /Applications/Messages.app? If not, why is the Illegal Instruction occuring?</p>