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VS 2010 Crash when click on Provision Templates


here is the errorlog.log,
Timestamp: 26/01/2011 22:42:59
              Message: TF14061: The workspace 25a6376d-5ad3-4f29-8bb2-4f612a21cc00;DOMAIN\Administrator does not exist.
              Category: Error
              Priority: -1
              EventId: 0
              Severity: Information
              Title:Log message
              Machine: XXXXXXX
              Application Domain: DefaultDomain
              Process Id: 280
              Process Name: C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe
              Win32 Thread Id: 1872
              Thread Name: 
              Extended Properties: Error at : Build Addin -    à Microsoft.TeamFoundation.Client.TeamFoundationClientProxyBase.ProcessHttpResponse(HttpWebResponse response, Stream responseStream, WebException webException, XmlReader& xmlResponseReader)
I can't see where I can change the name of the workspace ?? Administrator is not my login.
Anybody have an idea ?