I just downloaded the latest version of XCode from the Mac App Store and I tried running it on Lion DP4 and it will not run!!! It will not even run the installer. It tells me I need XCode 4.1, but this is not downloadable from the App Store -- this is the latest version they had to download (which is 4.0.2). I no longer have my Snow Leopard install on my disk. Did I just waste $5.00 to download XCode or will I have to wait until 4.1 is released and re-purchase it? Much help would be appreciated. Thanks.