If you're looking to run Proclarity with with SQL Server 2008, Patrick Husting points out on his Microsoft Business Intelligence blog that you'll need these hotfixes:
http://www.microsoft.com/downloads/info.aspx?na=22&p=6&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3ddc9cbe69-1db1-4f5d-9b48-06b156c0f2c6%26DisplayLang%3den
http://www.microsoft.com/downloads/info.aspx?na=22&p=9&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3dced0bd47-7d19-40de-8e80-f924784bd7af%26DisplayLang%3den
http://www.microsoft.com/downloads/info.aspx?na=22&p=6&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3ddc9cbe69-1db1-4f5d-9b48-06b156c0f2c6%26DisplayLang%3den
http://www.microsoft.com/downloads/info.aspx?na=22&p=9&SrcDisplayLang=en&SrcCategoryId=&SrcFamilyId=&u=%2fdownloads%2fdetails.aspx%3fFamilyID%3dced0bd47-7d19-40de-8e80-f924784bd7af%26DisplayLang%3den