When deploying an application to Windows Server 2008 I found the following error.
Could not locate the expected version of the Microsoft Windows SDK. Looked for a location specified in the "InstallationFolder" value of the registry key "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v6.0A". If your build process does not need the SDK then this can be ignored. Otherwise you can solve the problem by doing one of the following: 1) Install the Microsoft Windows SDK for Windows Server 2008 and .NET Framework 3.5. 2) Install Visual Studio 2008. 3) Manually set the above registry key to the correct location.
To solve this I downloaded and installed the v3.5 SDK for Windows server 2008.
This is the ISO:
If you are doing it remote you need to download the web installer