Installing Xcode in Lion with iTunes running

About 3/4 of the way through the install of Xcode under OS X Lion, it requires you close (quit) iTunes if you have it running. The problem is, an exit of iTunes is not enough. The modal window still hangs there asking you to stop iTunes even after the application has terminated. You actually need to also terminate the “iTunes Helper” application running in the background. To do so, fire up the Activity Monitor in your Utilities folder. Find the iTunes Helper application and close it down. Xcode should resume its installation at that point.