Question

I have a Web Service that uses the entity framework. When releasing to a test environment, I receive the following error:

“Unable to load one or more of the requested types.” – Stack trace below…

The test box has .NET 3.5 SP 1 installed, and I have read a previous post here:

Error message 'Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.'

However the answer does not solve it in my case. I have copied and pasted the working copy off my development machine onto the test box to ensure there is not a problem with debug DLLs (as the answer suggests), however no luck.

Is this a known issue? Ive spent an entire morning trying to debug this!! If anyone knows of a solution, please let me know!

Retrieve the LoaderExceptions property for more information.   at System.Reflection.Module._GetTypesInternal(StackCrawlMark& stackMark)
   at System.Reflection.Assembly.GetTypes()
   at System.Data.Metadata.Edm.ObjectItemCollection.AssemblyCacheEntry.LoadTypesFromAssembly(LoadingContext context)
   at System.Data.Metadata.Edm.ObjectItemCollection.AssemblyCacheEntry.InternalLoadAssemblyFromCache(LoadingContext context)
   at System.Data.Metadata.Edm.ObjectItemCollection.AssemblyCacheEntry.LoadAssemblyFromCache(Assembly assembly, Boolean loadReferencedAssemblies, Dictionary`2 knownAssemblies, Dictionary`2& typesInLoading, List`1& errors)
   at System.Data.Metadata.Edm.ObjectItemCollection.LoadAssemblyFromCache(ObjectItemCollection objectItemCollection, Assembly assembly, Boolean loadReferencedAssemblies)
   at System.Data.Metadata.Edm.ObjectItemCollection.LoadAssemblyForType(Type type)
   at System.Data.Metadata.Edm.MetadataWorkspace.LoadAssemblyForType(Type type, Assembly callingAssembly)
   at System.Data.Objects.ObjectContext.CreateQuery[T](String queryString, ObjectParameter[] parameters)
   at Company.Domain.ICommuicationsEntities.CreateQuery[T](String queryString, ObjectParameter[] parameters)
   at Comany.EntityFrameworkRepository`1.GetQuery()
   at Comany.Repositories.EntityFrameworkRepository`1.GetFiltered(Expression`1 filter, IncludeBuilder`1 includeBuilder)
   at Comany.Repositories.EntityFrameworkRepository`1.GetFiltered(Expression`1 filter)

Answer 1

As the top line of the stack says:

Retrieve the LoaderExceptions property for more information.

You can find this by examining the exception in the debugger.