OK, I know I just blogged, but I wanted to give you the results of my first official upgrade experience to Katmai.
To recap the last blog, BOL says that you can't upgrade from x64 Enterprise to x64 Enterprise in Katmai. You have to upgrade to developer and the upgrade that to enterprise. So I got my developer edition and went for the upgrade. And not to be too surprised, I'm getting the exact same error. It appears as though my Yukon Enterprise on Windows 2008 can't be upgraded to Katmai in any way. I wonder what's going on with that.
So it looks like I'm at step 3 in my upgrade path from the previous blog.
I might also add that the setup process with all of its checks didn't catch this problem until really late in the process. I would imagine that this would be one of the preliminary checks performed.
MS, do you have anything for me?