title: NUnit: Could not load assembly nunit.framework
body: <p>Trying to execute a unit test which references nunit.framework fails:</p>
  
  <pre><code>System.IO.FileNotFoundException: Could not load file or assembly
  'nunit.framework, Version=2.5.10.11092, Culture=neutral,
  PublicKeyToken=96d09a1eb7f44a77' or one of its dependencies. The
  system cannot find the file specified.
  </code></pre>
  
  <p>My scenario is the following:<br>
  Visual Studio 2010 TFS<br>
  C# and .NET Framewok v4.0<br>
  NUnit 2.6.0.12051</p>
  
  <p>Detailed explanation:<br>
  I have a test project which references some dlls, one is nunit.framework.dll.
  This dll (nunit.framework.dll), points to the folder where nunit 2.6.0.12051 is installed.
  I execute NUnit (not from visual studio), through nunit-x86.exe and once lauched I load the test project(it is a class library, dll). Nunit tries to load but the error above explained appears.Test project compiles Ok, the dll is generated correctly. Also test project is targeting to .NET Framework v4.0.</p>