I'm using NUnit to test my application but it is giving me odd error
messages that I have not seen before. I'm at a loss to think what
configuration change I have made that would break NUnit. (Or what
configuration changes I made at all) The application is new, so these
are new unit tests fixtures. I also upgraded to NUnit 2.2.7 in case
there was a problem with the previous version (no luck). My application
runs okay if I launch it, yet I cannot test it.

Here is the message produced by using the NUnit console through
TestDriven.NET:
------ Test started: Assembly: NOsm.Dao.Testing.dll ------

TestCase 'M:NOsm.Dao.Testing.BookmarkDaoTest.SimpleTest'
failed: Could not load file or assembly 'NOsm.Dao.Testing' or one of
its dependencies. An attempt was made to load a program with an
incorrect format.
    System.BadImageFormatException: Could not load file or assembly
'NOsm.Dao.Testing' or one of its dependencies. An attempt was made to
load a program with an incorrect format.
    File name: 'NOsm.Dao.Testing'
    at System.Reflection.Assembly.nLoad(AssemblyName fileName, String
codeBase, Evidence assemblySecurity, Assembly locationHint,
StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean
forIntrospection)
    at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean
forIntrospection)
    at System.Reflection.Assembly.InternalLoad(String assemblyString,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean
forIntrospection)
    at System.Reflection.Assembly.Load(String assemblyString)
    at TestDriven.TestRunner.AdaptorTestRunner.Run(ITestListener
testListener, ITraceListener traceListener, String assemblyPath, String
testPath)
    at TestDriven.TestRunner.ThreadTestRunner.Runner.Run()

    WRN: Assembly binding logging is turned OFF.
    To enable assembly bind failure logging, set the registry value
[HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
    Note: There is some performance penalty associated with assembly bind
failure logging.
    To turn this feature off, remove the registry value
[HKLM\Software\Microsoft\Fusion!EnableLog].

0 passed, 1 failed, 0 skipped, took 0.89 seconds.

The code for SimpleTest is:
       [Test]
       public void SimpleTest()
       {
           Assert.IsFalse(true);
       }

If I use the NUnit GUI I get a slightly different exception:
System.IO.FileNotFoundException...

Server stack trace:
  at System.Reflection.Assembly.nLoad(AssemblyName fileName, String
codeBase, Evidence assemblySecurity, Assembly locationHint,
StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean
forIntrospection)
  at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean
forIntrospection)
  at System.Reflection.Assembly.InternalLoad(String assemblyString,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean
forIntrospection)
  at System.AppDomain.Load(String assemblyString)
  at NUnit.Core.Builders.TestAssemblyBuilder.Load(String assemblyName)
  at NUnit.Core.Builders.TestAssemblyBuilder.Build()
  at NUnit.Core.Builders.TestAssemblyBuilder.Build(String testName)
  at NUnit.Core.TestSuiteBuilder.Build(String assemblyName, String
testName)
  at NUnit.Core.SimpleTestRunner.Load(String assemblyName, String
testName)
  at NUnit.Core.SimpleTestRunner.Load(String assemblyName)
  at NUnit.Core.ProxyTestRunner.Load(String assemblyName)
  at NUnit.Core.ProxyTestRunner.Load(String assemblyName)
  at
System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr
md, Object[] args, Object server, Int32 methodPtr, Boolean
fExecuteInContext, Object[]& outArgs)
  at
System.Runtime.Remoting.Messaging.StackBuilderSink.PrivateProcessMessage(RuntimeMethodHandle
md, Object[] args, Object server, Int32 methodPtr, Boolean
fExecuteInContext, Object[]& 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&
msgData, Int32 type)
  at NUnit.Core.TestRunner.Load(String assemblyName)
  at NUnit.Util.TestDomain.Load(String assemblyFileName, String
testFixture)
  at NUnit.Util.TestLoader.LoadTest(String testName)

Any help would be appreciated.

Thanks,
Colin.