It will shows a dialog when I launch Xcode.app.
You don’t have permission to save the file “DeveloperDiskImages” in the folder “Developer”.
Then, I clicked OK to move on.
Then, I choose the button "Create New Project", the app just crashed immediately.
I also tried to manually create the folder "DeveloperDiskImages" in /Users/howardchung/Library/Developer/
It will not show the dialog while launching Xcode.app, but also crashed in "Create New Project".