I tried this out, and fell over at the second step, given I did not have a dbadata database already existing in my environment. I could run the 'install' script but not the 'enable' script on SQL 2005.
Once I manually created the dbadata database, and reran the 'install' script I could continue all OK!
Is this requirement for the dbadata database to already exist an omission, or an is it an assumption that you would manually create the dbadata database first?
If it's an omission, then can I please recommend it is added to the doc, as this is an extremely useful post that saved me and my colleague a lot of time and wasted energy. :-D