This article also applies to the following product:

  • Microsoft Visual Studio Test Agent 2010


An update rollup that is available resolves the following issues that occur when you use the testing tools in Microsoft Visual Studio 2010 Service Pack 1 (SP1).

Issue 1

Consider the following scenario:

  • You use Microsoft Test Runner in Microsoft Test Manager to run a manual test.

  • You create a bug or run a test.

In this scenario, Test Runner may crash, and then you may receive the following error message:

Test Runner is waiting for the application under test

Issue 2

Consider the following scenario:

  • You run some unit tests on a test agent in Test Manager.

  • You edit the Local.testsettings file for the unit tests.

  • You use a custom batch file in a startup script.

  • The batch file starts a web service before a unit test is performed.

In this scenario, the unit test does not start as expected after the web services runs.

Issue 3

In some cases, Test Manager crashes, a System.StackOverflowException exception occurs, and a Clr20r3 Dr. Watson error is generated. The Blamed Symbol field of the Dr. Watson error contains a value resembling the following:


More Information

Update information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Note You can also download this update from the following Microsoft website:


To apply this update, you must have Visual Studio 2010 SP1 installed.

Restart requirement

You may have to restart the computer after you install this hotfix if the affected files are being used.

We recommend that you exit all instances of Visual Studio before you install this hotfix.

Update replacement information

This update does not replace a previously released update.

File information

The global version of this update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

File name

File version

File size






















Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

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