Hahahaha, welcome OldRetard, sir. ;)
So, hmm. How did you run through the installer wizard? Did you mount the ISO in Windows first? Or did you directly refer to the ISO file itself in the wizard?
The proper way to do it would be to choose "No, I have the installation files or media", then "inside a CD image ISO", then browse for your ISO file, select the destination folder, choose "Yes, automatically mount the CD", and "Yes, copy to the destination folder" and then proceed with the install.
Let me know if that's what you already did or if that fixes it for you.