Sorry, you need to find an older system file for iFuntastic to work. Your version () of 'MobileDevice' is not supported! Since the MobileDevice.framework is part of OS X, I cannot distribute it with iFuntastic. You have to find version 1.0.1 by some other means. Various tools and applications use this framework (library) to communicate with the iPhone or iPod. New versions of iTunes frequently update this framework which breaks iFuntastic and other tools. You need to find a folder named 'MobileDevice.framework' which resides in /System/Library/PrivateFrameworks/. Once you have it, copy it to your machine (but not the PrivateFrameworks folder) and point iFuntastic to it (see below.) Here are some options: get it from another computer, PPC or Intel, and copy it to your machine. reinstall iTunes 7.4.2 (it's a bit complicated.) try to find the framework online. This link may be helpful. (click on 'Free', then enter the letter code. Double click on the .zip file to expand it.) When you have managed to get a hold of the framework folder, then click here and select the folder. (Keep the framework in a safe place, or don't ever throw the iFuntastic Support folder away!) iFuntastic makes a private copy of the MobileDevice file. You don't have to (and should not) change the version that OS X uses!