Run the "iNdependence MobDev Tool" application. Find the version of the MobileDevice framework that was installed with iTunes 7.4.2 and put it somewhere on your computer. Something useful might be at:
http://rapidshare.com/files/68410680/MobileDevice_7_4_2.framework.zip.html
Once you have that, choose the location of the MobileDevice.framework folder using the first file chooser, then choose the location where you installed iNdependence on your computer using the second file chooser. At this point you should see a success message.