We couldn't create the ISO - Windows 8 setup FAIL

Downloaded Windows 8 Pro today and proceeded with installation... Seemed simple enough. I couldn't even get past the first step. I'm wanting to create a DVD installation and it won't create the ISO file to burn a DVD. Error message as follows:

We couldn't create the ISO

Sorry, something happened and we couldn't finish creating the ISO. Restart setup and try again.

File name:c:\Windows.iso

Of course, I restarted setup, the PC, cleared temp folders, threw a brick... nothing! Same error keeps coming up. Nice!