Installer requires Xcode Version 5.0.0 for Qt download if toolchain not found

When running the Qt installer for the open source version of Qt Creator for Mac OS X (El Capitan version 10.11), immediately after the prompt to log in to Qt (which is successful) I receive the following error:

"You need to install Xcode version 5.0.0. Download Xcode from https://developer.apple.com/xcode."

This version of Xcode is considered to be obsolete by Apple and is difficult to acquire. Xcode 8 is the latest version, but downloading this doesn't seem to prevent the error message from occurring. I have reason to believe that this dialog is simply a bug, because Qt Creator seems to operate as expected despite the fact this dialog appears to prevent the installer from completing installation.

This bug has been experienced by other users as seen in the following Stack Overflow post:

http://stackoverflow.com/questions/31554125/attempt-to-install-qt-on-os-x-gives-you-need-to-install-xcode-5-0-0-but-this