This is something that I put together to stop System Preferences from starting when your system starts up. I've noticed this happen around upgrading from OS X 10.7 to 10.8, and it seems to be on 10.9 and 10.10 versions of OS X.

So instead of manually typing commands out in the console, this automates the entire task for you.

The app is not encrypted, which means that you actually can access the code (script) to make changes and modifications if you so desire. To do this, after you mount the image System Preferences Fix OS X.dmg, follow the next steps:

1. If you've not done so already, open System Preferences Fix OS X on your Desktop.
2. Right click on System Preferences Fix OS X.app, then "Show Package Contents".
3. Select Contents then MacOS and you should see System Preferences Fix OS X.

The System Preferences Fix OS X within System Preferences Fix OS X.app is a bash script, I must apologize that I forgot to put an extension (.sh) on it, and changing it from within the app may actually break the actual app. So it's best to make changes to it using something like TextEdit, and saving it in-place, or copy the System Preferences Fix OS X elsewhere, modify it and put it back in the System Preferences Fix OS X.app.