I'm following the steps as listed, and everything is working, but I'm getting different probabilities and results, even though I am using the AdventureWorksDW2012 DB (which of course you have to, since you're using the AdventureWorks Multidimensional Models project that is configured to use the AWDW2012 DB). For example, when I look at Cluster 1 in the Mining Model Viewer, I get that the Region is North America:

Has the DB been modified since this series was originally written?