Failing Build because it can't find AL.exe

Question

Here's an interesting problem that really has me scratching my head. I have a project that's being built in TeamCity. It's been working fine until a developer added a resource file to one of the projects with some strings for another locale. He's added the .resx file under the Properties folder next to the default one. Here's the error message from the build log:

C:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets(2105, 9):
error MSB3091: Task failed because "AL.exe" was not found, or the correct
Microsoft Windows SDK is not installed. The task is looking for "AL.exe" in the "bin"
subdirectory beneath the location specified in the InstallationFolder value
of the registry key
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v6.0A.
You may be able to 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.
4) Pass the correct location into the "ToolPath" parameter of the task. 

There are a number of things here that I can't work out. - How come it can find AL.exe for the default .resx file but not for this new one? - Why's it looking in a registry key that looks Vista-specific, when the build is running on Server 2003?

Any ideas?

Answer 1

Problem solved by installing Windows SDK for Windows Server 2008 and .NET Framework 3.5 SP1.

I don't understand how MSBuild got out of step with its tools, perhaps I never will discover the reason, but installing that SDK fixed the problem for me.