Xcode 10.2 does not open after installation from Mac App Store When I try to open Xcode 10.2 after installing it from Mac App Store, it doesn't open. After a while, a dialog box comes up with an error


  check with the developer to make sure Xcode works with this version of macOS


I am running macOS Mojave 10.14.2
Xcode 10.2 requires a minimum macOS of 10.14.3.

It would appear that the App Store doesn't check the minor OS version number before allowing download, leading to this potential for confusion.