This customer is unable to get Test Studio to connect bug tracking to his TFS 2008 server. He has Team Explorer 2010 installed. He can successfully connect to TFS source control, but when he tries to connect bug tracking he gets an error reported in the UI and this in our application log:
[10/21 08:47:46,Telerik.TestStudio.exe(5956:1),Uncategorized] TfsConnectionViewModel.GetTfsCollections() : EXCEPTION! (see below)
     Situation: Unable to retrieve the TFS collections!
     Outer Exception Type: Microsoft.TeamFoundation.TeamFoundationServiceUnavailableException
     Message: Team Foundation services are not available from server http://192.168.30.57:8080/.
          Technical information (for administrator):
          HTTP code 404: Not Found
     HRESULT: 0x80131600 (Official ID (if app.) = COR_E_APPLICATION, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5632)
     Call Stack:
          at Microsoft.TeamFoundation.Client.TeamFoundationClientProxyBase.ProcessHttpResponse(HttpWebResponse response, Stream responseStream, WebException webException, XmlReader& xmlResponseReader)
          at Microsoft.TeamFoundation.Client.TeamFoundationClientProxyBase.ExecWebServiceRequest(HttpWebRequest request, XmlWriter requestXml, String methodName, HttpWebResponse& response)
          at Microsoft.TeamFoundation.Framework.Client.LocationWebService.Connect(Int32 connectOptions, ServiceTypeFilter[] serviceTypeFilters, Int32 lastChangeId)
          at Microsoft.TeamFoundation.Framework.Client.FrameworkServerDataProvider.Connect(ConnectOptions connectOptions)
          at Microsoft.TeamFoundation.Client.TfsConnection.EnsureProviderConnected()
          at Microsoft.TeamFoundation.Client.TfsConnection.<EnsureAuthenticated>b__0()
          at Microsoft.TeamFoundation.Client.TfsConnection.UseCredentialsProviderOnFailure(Action action)
          at Microsoft.TeamFoundation.Client.TfsConnection.EnsureAuthenticated()
          at Telerik.TestStudio.TFSBugTracker.TFSBugTracker.GetTeamFoundationServer(TFSSettings settings)
          at Telerik.TestStudio.TFSBugTracker.TFSBugTracker.GetAllTfsCollections(TFSSettings settings)
          at Telerik.TestStudio.TFSBugTracker.TfsConnectionViewModel.GetTfsCollections()
     Inner Exception Type: System.Net.WebException
     Message: The remote server returned an error: (404) Not Found.
     HRESULT: 0x80131509 (Official ID (if app.) = COR_E_INVALIDOPERATION, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5385)
     Call Stack:
          at System.Net.HttpWebRequest.GetResponse()
          at Microsoft.TeamFoundation.Client.TeamFoundationClientProxyBase.AsyncWebRequest.ExecRequest(Object obj)