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problem downloading AdventureWorks2008R2_NovemberCTP.exe


I have been trying to download the sample AdventureWorks2008 databases, specifically AdventureWorks2008R2_NovemberCTP.exe, but when I get to the screen where you Select which databases to download, all the OLAP databases have a warning sign. I do not want the OLAP databases, but there is no way to select/deselect them and I cannot proceed to download the other databases that I do want. I believe I have met the prerequisites for enabling filestream and full-text filter daemon launcher service.
Thanks for any help.