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  1. POCan't Install SQL Server 2008 R2 Express
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    <p>I have a problem with installing <strong>SQL Server 2008 R2 Express</strong>.</p> <p>On my computer, I have installed VC# and VWebdev 2010 express. It included SQL Server 2008 Express inside.</p> <p>After that, I did an upgrade to SQL Server 2008 R2 Express.</p> <p>The consequence is I can't connect to a local server itself. So, I uninstall all of SQLServer products and reinstall again. Then an error message pops up on my screen which is pasted on the end of this question.</p> <p>My computer runs on Win7 <strong>x64</strong>. SQL Server installer is a <strong>64-bit version</strong>. My System.dll, which I think a root of this problem, assembly is 2.0.0.0 version.</p> <p>The error message: </p> <blockquote> <p>System.Configuration.ConfigurationErrorsException: An error occurred creating the configuration section handler for userSettings/Microsoft.SqlServer.Configuration.LandingPage.Properties.Settings: <strong>Could not load file or assembly 'System, Version=4.0.0.0</strong>, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The system cannot find the file specified. (C:\Users\BenZ\AppData\Local\Microsoft_Corporation\LandingPage.exe_StrongName_ryspccglaxmt4nhllj5z3thycltsvyyx\10.0.0.0\user.config line 5) ---> System.IO.FileNotFoundException: Could not load file or assembly 'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The system cannot find the file specified. File name: 'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' at System.Configuration.TypeUtil.GetTypeWithReflectionPermission(IInternalConfigHost host, String typeString, Boolean throwOnError) at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.Init(RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord) at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.InitWithRestrictedPermissions(RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord) at System.Configuration.RuntimeConfigurationRecord.CreateSectionFactory(FactoryRecord factoryRecord) at System.Configuration.BaseConfigurationRecord.FindAndEnsureFactoryRecord(String configKey, Boolean&amp; isRootDeclaredHere)</p> </blockquote>
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