Visual studio crashed 4 times after parameterisation

Visual studio keeps crashing after parameterisation.

This happened 4 times in last 24 hrs.

I had to reboot the machine each time it happened.

The following was discovered in the VSTestHost.exe.config file

[W, 760, 5, 2006/10/24 10:33:23.185 13606305149] vstesthost.exe: WebLoadTestAdapter: Stack trace for error:

at Microsoft.VisualStudio.TestTools.WebStress.WebTestInstrumentedTransaction.UpdateBindingSites(String preBoundString)

at Microsoft.VisualStudio.TestTools.WebStress.WebTestInstrumentedTransaction.PerformRequestDataBinding()

at Microsoft.VisualStudio.TestTools.WebStress.WebTestInstrumentedTransaction.Execute(WebTestCaseContext testCaseContext, AsyncCallback completionCallback, Object callerState)

[E, 760, 5, 2006/10/24 10:33:23.185 13606307121] vstesthost.exe: WebLoadTestAdapter: Exception initializing WebTestRequestResult: System.NullReferenceException:

Object reference not set to an instance of an object.

at Microsoft.VisualStudio.TestTools.WebStress.WebTestRequestResult.Initialize(WebTestInstrumentedTransaction transaction)