TFS VS.NET 2008 Testing Fails Corrupt Installer

I recently tried to install vs.net 2008 for testers and was not able to run testing projects succesfully.
I was getting the this error:

I tried re-installing vs.net 2008 for testers ( I already had vs.net Team Foundation 2008 installed) but I had error with the installer.

These are the errors in the Application Event Logs:

Error in Template (C:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\ItemTemplates\Web\VisualBasic\1033\AdoNetEntityDataModelVB_ASPNET.zip), file (ModelObjectItemVB_ASPNET.vstemplate). Invalid template element (TemplateID) value (Microsoft.Data.Entity.Design.VSTemplate.ModelObjectItemVB_ASPNET).

Finally I tried to re-install Visual Studio .NET 2008 SP1 and that fixed the problems with the test projects.

My setup was in this order:

1) VS.net 2008 Team Foundation Server
2) Vs.net 2008 SP1
3) Vs.net 2008 for Testers (Didn't work)
So I went back and Re-install SP1 and fixed all my vs.net issues.