error on installing GAT

Question

Hi.
I have vs2010 ultimate.i succeeded to install GAX but when i try to install GAT i get that error:

 Beginning to install extension to Microsoft Visual Studio 2010 Ultimate...
10/04/2011 11:49:20 - Install Error : Microsoft.VisualStudio.ExtensionManager.MissingReferencesException: This extension cannot be installed because the following references are missing:
- Microsoft Visual Studio SDK
   at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.BeginInstall(IInstallableExtension installableExtension, Boolean perMachine, AsyncOperation asyncOp)
   at Microsoft.VisualStudio.ExtensionManager.ExtensionManagerService.InstallWorker(IInstallableExtension extension, Boolean perMachine, AsyncOperation asyncOp)
WHY????

Answer 1

http://social.msdn.microsoft.com/Forums/en-SG/vsgatk/thread/f33f5a25-fca9-41af-b57f-2519fd46eefe 

you need to install VS 2010 SDK before installing GAX and GAT 2010

---

S Arora