I have an existing SQL Server installed in my computer running Windows 7 which is SQL Server 2005 instance. I’ve tried to upgrade to SQL Server 2008 R2 but it gives me an error during the setup. Please refer to the image below.
SQL Server Setup failure.
SQL Server Setup has encountered the following error:
Method not found: 'Microsoft.SqlServer.Configuration.Sco.SqlEdition
I’ve also tried performing a clean install by uninstalling first the SQL Server 2005 but still it gives me the same error message. How do I get rid of this error message?
Someone help me please.