I've done enough installs to be skeptical of install errors stating that the install cannot copy files. Mouthful? I'm doing an upgrade from Vista SP1. After about 5 minutes, I receive an error message with error code 0x80070017. Message stated files may be corrupt or missing. Before I redownload and burn a new DVD, has anybody seen this and got past it without obtaining new bits? So I was wrong. It appears to be a bad dvd.