Test Studio application log shows:

     Outer Exception Type: System.IndexOutOfRangeException
     Message: Index was outside the bounds of the array.
     HRESULT: 0x80131508 (Official ID (if app.) = COR_E_INDEXOUTOFRANGE, Error Bit = FAILED, Facility = FACILITY_URT, Code = 5384)
     Call Stack:
          at Telerik.TestingFramework.Net.HttpUtilities.<ExtractUriParameters>b__3(String str)
          at System.Linq.Enumerable.WhereSelectArrayIterator`2.MoveNext()
          at Telerik.TestingFramework.Extensions.CollectionExtensions.<Distinct>d__f`2.MoveNext()
          at Telerik.TestingFramework.Extensions.CollectionExtensions.AddRange[Tkey,Tvalue](IDictionary`2 dict, IEnumerable`1 values)
          at Telerik.TestingFramework.Extensions.CollectionExtensions.AsDictionary[TKey,TElement](IEnumerable`1 source)
          at Telerik.TestingFramework.Net.HttpUtilities.ExtractUriParameters(String strUri)
          at Telerik.TestingFramework.Net.HttpUtilities.DeserializeContent(String strContentEncoding, ContentType contentType, MemoryStream inputStream)
          at Telerik.TestStudio.Load.Http.OutstandingRequest.ApplyBindingsToRequest(HttpRequestBuilder requestBuilder)
          at Telerik.TestStudio.Load.Http.OutstandingRequest.<Run>d__0.MoveNext()