There's still people out there that haves problems upgrading to Edgy Eft – Payton Byrd at ittoolbox is one of them.
Read it here
Apparently self-inflicted root-canal would be easier. Things went swimmingly for the first 6 hours as it downloaded 800+ MB of packages, then began installing them. Then I got a warning dialog about a package not installing. The dialog indicated that the installation would stop. I clicked OK, but it just kept going for another couple of hours. Then it gave me a much more dire dialog box stating the upgrade had failed.