I am NOT able to install SQL Server 2008 R2 Express (both 32 and 64 bit versions with Tools fail). I get an unhandled exception error with an option to Continue. When I click Continue, I get another error that states: Unable to generate a temporary class................... I am using Windows 7 Professional and all service packs are up to date. I need the SQL Server software due to my use of Visual Studio 2010 Professional. This problem all stated because of a Windows Update. It was a service pack update for SQL Server 2008 R2 Express that had been installed since July 2011. When I couldn't install the SQL service pack, an author of Beginning ASP.NET 4 in C# and VB (Imar Spaanjaars) suggested that I uninstalled SQL Server 2008 R2. That took several days. The Add/Remove feature of the Control Panel does not work correctly when trying to remove all instances of SQL Server 2008 R2 Express. I then went through the registry (regedit) and removed all references to SQL. That took more than 24 hours. I hope you can provide a solution for me so that I can be a successful programmer using VS 2010 Professional. Sincerely, Jack Koyle 248-886-1516 Michigan, USA

Hi, Regarding the SQL Server installation issue, please post in SQL Server forum below. http://social.msdn.microsoft.com/Forums/en-US/sqlgetstarted/threads Based on my search, you can delete the User.Config file, located under the path the exception shows you under users\AppData for a test. Best Regards, Niki Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi, Regarding the SQL Server installation issue, please post in SQL Server forum below. http://social.msdn.microsoft.com/Forums/en-US/sqlgetstarted/threads Based on my search, you can delete the User.Config file, located under the path the exception shows you under users\AppData for a test. Best Regards, Niki Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.