whitewolf - try re-installing. It appears a portion of the file system is missing.
Did you check the MD5 hash? Make sure you have a good image.
Are you doing a HDD install, Live CD, or bootable USB? If you are installing on a bootable USB, make certain you have enough room for a proper install. If you're doing a HDD install check the integrity of your media. A little more information about your install would be helpful.