Unity Error: The given assembly name or codebase was invalid

I am using the microsoft unity frame work and getting this error:

********** 4/15/2012 9:46:08 AM **********
Inner Exception Type: System.IO.FileLoadException
Inner Exception: The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)
Inner Source: mscorlib
Inner Stack Trace: 
   at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMarkHandle stackMark, Boolean loadTypeFromPartialName, ObjectHandleOnStack type)
   at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, Boolean loadTypeFromPartialName)
   at System.RuntimeType.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark)
   at System.Type.GetType(String typeName)
   at Microsoft.Practices.Unity.Configuration.ConfigurationHelpers.TypeResolverImpl.SearchAssemblies(String typeNameOrAlias)
   at Microsoft.Practices.Unity.Configuration.ConfigurationHelpers.TypeResolverImpl.ResolveTypeThroughSearch(String typeNameOrAlias)
   at Microsoft.Practices.Unity.Configuration.ConfigurationHelpers.TypeResolverImpl.ResolveTypeInternal(String typeNameOrAlias)
   at Microsoft.Practices.Unity.Configuration.ConfigurationHelpers.TypeResolverImpl.ResolveType(String typeNameOrAlias, Boolean throwIfResolveFails)
   at Microsoft.Practices.Unity.Configuration.SectionExtensionElement.GetExtensionObjectType()
   at Microsoft.Practices.Unity.Configuration.SectionExtensionElement.DeserializeElement(XmlReader reader, Boolean serializeCollectionKey)
   at Microsoft.Practices.Unity.Configuration.ConfigurationHelpers.DeserializableConfigurationElement.Deserialize(XmlReader reader)
   at Microsoft.Practices.Unity.Configuration.ConfigurationHelpers.ConfigurationElementExtensions.ReadUnwrappedElement[TElementType](ConfigurationElement baseElement, XmlReader reader, DeserializableConfigurationElementCollectionBase`1 elementCollection)
   at Microsoft.Practices.Unity.Configuration.UnityConfigurationSection.DeserializeSectionExtension(XmlReader reader)
   at Microsoft.Practices.Unity.Configuration.UnityConfigurationSection.<.cctor>b__5(UnityConfigurationSection s, XmlReader xr)
   at Microsoft.Practices.Unity.Configuration.ConfigurationHelpers.UnknownElementHandlerMap`1.ProcessElement(TContainingElement parentElement, String elementName, XmlReader reader)
   at Microsoft.Practices.Unity.Configuration.UnityConfigurationSection.OnDeserializeUnrecognizedElement(String elementName, XmlReader reader)
   at System.Configuration.ConfigurationElement.DeserializeElement(XmlReader reader, Boolean serializeCollectionKey)
   at System.Configuration.ConfigurationSection.DeserializeSection(XmlReader reader)
   at Microsoft.Practices.Unity.Configuration.UnityConfigurationSection.DeserializeSection(XmlReader reader)
   at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSectionImpl(RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader)
   at System.Configuration.RuntimeConfigurationRecord.RuntimeConfigurationFactory.CreateSectionWithRestrictedPermissions(RuntimeConfigurationRecord configRecord, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader)
   at System.Configuration.RuntimeConfigurationRecord.CreateSection(Boolean inputIsTrusted, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader)
   at System.Configuration.BaseConfigurationRecord.CallCreateSection(Boolean inputIsTrusted, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentConfig, ConfigXmlReader reader, String filename, Int32 line)
Exception Type: System.Configuration.ConfigurationErrorsException
Exception: An error occurred creating the configuration section handler for unity: The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047) (C:\Calico\CDT\Dev\CalicoEnergy\EIS.Application.ManinboundedContext.Tests.Integration\bin\Debug\TestResults\Cameron_CAMERON-ENVYPC 2012-04-15 09_46_06\Out\EIS.Application.ManinboundedContext.Tests.Integration.dll.config line 15)
Source: UnityContainer().LoadConfiguration()
Stack Trace: 
   at System.Configuration.BaseConfigurationRecord.EvaluateOne(String[] keys, SectionInput input, Boolean isTrusted, FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentResult)
   at System.Configuration.BaseConfigurationRecord.Evaluate(FactoryRecord factoryRecord, SectionRecord sectionRecord, Object parentResult, Boolean getLkg, Boolean getRuntimeObject, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSectionRecursive(String configKey, Boolean getLkg, Boolean checkPermission, Boolean getRuntimeObject, Boolean requestIsHere, Object& result, Object& resultRuntimeObject)
   at System.Configuration.BaseConfigurationRecord.GetSection(String configKey)
   at System.Configuration.ClientConfigurationSystem.System.Configuration.Internal.IInternalConfigSystem.GetSection(String sectionName)
   at System.Configuration.ConfigurationManager.GetSection(String sectionName)
   at Microsoft.Practices.Unity.Configuration.UnityContainerExtensions.LoadConfiguration(IUnityContainer container)
   at EIS.Application.ManinboundedContext.Tests.Integration.DemandResponesAppServiceIntegrationTests.InitializeTesting(TestContext context) in C:\Calico\CDT\Dev\CalicoEnergy\EIS.Application.ManinboundedContext.Tests.Integration\DemandResponesAppServiceIntegrationTests.cs:line 48

I know I am missing an assembly. How do I determine what assembly I am missing? I am running mstest project. I have tried the assembly binding viewer with no results. I have added references to all assemblies to my testing project. How do I trouble shoot this? Unity does not tell me what assembly is missing.

I was not able to get fuslogvw to show me which assemplies were missing.

But

By doing a diff using beyond compare between the bin\debug dir of my test project and the directory being created by mstest to execute the test with (\TestResults\My Machine Name 2012-04-23 09_22_24\Out) I was able to identify the missing assemblies.

I was not aware that mstest was building to a new directory and not picking up some of the types being injected. Once I figured out MSTest was creating its own dir I was able to do the diff to find the issue.

FYI. It was enterprise library types that were missing.