Recently, I have read issues where people did the upgrade and had problems.
They backed up and did a fresh installation and it worked fine. I am not
sure if this will be to everyone's liking, but it is worth a try. Not all
upgrades work for various reasons. Even some Windows 7 upgrades go awry.

Troubleshooting and fixing problems takes patience and time. Sometimes a
quick and dirty fresh installation is the best way.