Comment 4 for bug 1670546

Oops, above comment should have included:

"You probably had a bad write to your media and no doubt the issue was resolved some time ago. Should you have such a problem in the future please try the option to check the integrity of theimage from the installer boot menu, and if this confirms that the media is corrupt, try re-writing it."

Closing as "Invalid" due to the amount of time that elapsed since the bug report was raised.