I am trying to install SQL Server 2008 but it tells me that "Previous releases of Microsoft Visual Studio 2008: Failed". I downloaded Visual Studio 2008 SP1 from here VS2008 SP1, installed it (it said that the installation was successful), restarted the machine, but nothing has changed in Visual Studio Help -> About and the SQL Server 2008 Setup still tells me that Visual Studio 2008 is not upgraded to the SP1.
Does anybody know what is going wrong?