title: NUnit - System.IO.FileNotFoundException
body: <p>Im trying to load a .dll into Nunit which I have never used before(NUnit), when I try open the .dll in Nunit I get the following error. I have no idea whats going wrong , Google doesn't turn up much on this. Any suggestions?</p>
  
  <pre><code>System.IO.FileNotFoundException...
  
  Server stack trace: 
         at System.Reflection.RuntimeAssembly.GetExportedTypes(RuntimeAssembly assembly, ObjectHandleOnStack retTypes)
     at System.Reflection.RuntimeAssembly.GetExportedTypes()
     at NUnit.Core.CoreExtensions.InstallAdhocExtensions(Assembly assembly)
     at NUnit.Core.Builders.TestAssemblyBuilder.Load(String path)
     at NUnit.Core.Builders.TestAssemblyBuilder.Build(String assemblyName, Boolean autoSuites)
     at NUnit.Core.Builders.TestAssemblyBuilder.Build(String assemblyName, String testName, Boolean autoSuites)
     at NUnit.Core.TestSuiteBuilder.BuildSingleAssembly(TestPackage package)
     at NUnit.Core.TestSuiteBuilder.Build(TestPackage package)
     at NUnit.Core.SimpleTestRunner.Load(TestPackage package)
     at NUnit.Core.ProxyTestRunner.Load(TestPackage package)
     at NUnit.Core.ProxyTestRunner.Load(TestPackage package)
     at NUnit.Core.RemoteTestRunner.Load(TestPackage package)
     at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]&amp; outArgs)
     at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext)
  
  Exception rethrown at [0]: 
     at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
     at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&amp; msgData, Int32 type)
     at NUnit.Core.TestRunner.Load(TestPackage package)
     at NUnit.Util.TestDomain.Load(TestPackage package)
     at NUnit.Core.ProxyTestRunner.Load(TestPackage package)
     at NUnit.Util.RemoteTestAgent.AgentRunner.Load(TestPackage package)
     at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Int32 methodPtr, Boolean fExecuteInContext, Object[]&amp; outArgs)
     at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg, Int32 methodPtr, Boolean fExecuteInContext)
  
  Exception rethrown at [1]: 
     at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
     at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData&amp; msgData, Int32 type)
     at NUnit.Core.TestRunner.Load(TestPackage package)
     at NUnit.Core.ProxyTestRunner.Load(TestPackage package)
     at NUnit.Util.ProcessRunner.Load(TestPackage package)
     at NUnit.Util.TestLoader.LoadTest(String testName)
  </code></pre>