title: NUnit runner failure in Teamcity
body: <p>I have configured a build step for NUnit test for a .Net project (framework 4.0) in Teamcity.When run the build it shows the error like below.</p>
  
  <p>"NUnit runner failure". 
  The detail log shows like below. </p>
  
  <pre><code> Build step details
   Runner Type : NUnit
   NUnit Runner : NUnit 2.6.2
   .Net runtime : MSIL
   Version      : V2.0 
  
  Result :
  [20:01:55]Step 6/7: NUnit
  [20:01:55][Step 6/7] 
  Starting: 
  C:\BuildAgent\plugins\dotnetPlugin\bin\JetBrains.BuildServer.NUnitLauncher.exe             
  #TeamCityImplicit
  [20:01:55][Step 6/7] in directory: C:\BuildAgent\work\376652cbd18bb804
  [20:01:56][Step 6/7] Process exited with code -2146232576
  [20:01:56][Step 6/7] Step NUnit failed
  </code></pre>