SQL Server 2008 RTM is released now. Today I used my Windows Server 2008 PC to download SQL Server 2008 Books Online (SQLServer2008_BOL.msi). I tried to install it, but it had the following message.
The installation package cannot be installed by the installer service. You must install a windows service pack that contains a newer version of the windows installer service.
This message showed that I didn’t have Windows Installer. After I installed Windows Installer 4.5 Redistributable (Windows6.0-KB942288-v2-x86.msu), everything was fine.