Hello,

I am having a similar issue with the Extract method:

The given key was not present in the dictionary.
   at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
   at Umbraco.Courier.Core.PersistenceManager.get_Default()
   at Umbraco.Courier.RepositoryProviders.Local.OpenSession(String key)
   at Umbraco.Courier.Core.Extraction.RevisionExtraction.Extract()
   at Infragistics.Umbraco.Tasks.ExtractRevisionTask.Execute() in ...

My version of Courier is 2.7.5

Here is my code:

string pluginsRoot = Path.Combine(UmbracoRoot, @"Umbraco\Plugins");
string configPath = Path.Combine(UmbracoRoot, @"Config\config.xml");

TypeResolver.LoadAssembliesIntoAppDomain(pluginsRoot, "*.dll");

Context.Current.SettingsFilePath = Context.Current.MapPath(configPath);

Context.Current.BaseDirectory = UmbracoRoot;
Context.Current.HasHttpContext = false;
try
{
    CourierWebserviceRepositoryProvider repositoryProvider = new CourierWebserviceRepositoryProvider();
    repositoryProvider.Login = Login;
    repositoryProvider.Password = Password;
    repositoryProvider.Url = UmbracoUrl;
    repositoryProvider.UserId = -1;

    using (Repository repository = new Repository(repositoryProvider))
    {
        using (RevisionExtraction extractingEngine = new RevisionExtraction(Revision))
        {
            extractingEngine.Source = repository;
            extractingEngine.ExtractedItem += (sender, e) => Log.LogMessage("Extracted item {0}.", e.Item.Name);
            extractingEngine.ExtractedItemResources += (sender, e) => Log.LogMessage("Extracted resource {0}.", e.Item.Name);
            extractingEngine.Extract();
        }
    }

    return true;
}
catch (Exception exc)
{
    Log.LogErrorFromException(exc);
    return false;
}

similer: Looks like it is never trying to create the document/cant find it.

/2/2013 1:27:47 PM; Umbraco.Courier.Core.Exceptions.ExtractionManagerException: There was a problem with extracting database information for the item: Name:Document Why Windstream Property Data | Id:b12a9253-9fc9-4625-9fec-e999d0c5c0ff | Provider:PropertyData. Stacktrace: System.NullReferenceException: Object reference not set to an instance of an object.

   at Umbraco.Courier.Persistence.V6.NHibernate.Helpers.ContentTypeHelper.GetPropertyTypesRecursively(CmsContentType ct, ISession session) in c:\Program Files (x86)\teamcity\buildAgent\work\650bafc4b83aa858\Core\Umbraco.Courier.Persistence.V6.NHibernate\Helpers\ContentTypeHelper.cs:line 175

   at Umbraco.Courier.Persistence.V6.NHibernate.Helpers.ContentTypeHelper.GetPropertyTypesRecursively(String ct, Guid nodeObjectType, ISession session) in c:\Program Files (x86)\teamcity\buildAgent\work\650bafc4b83aa858\Core\Umbraco.Courier.Persistence.V6.NHibernate\Helpers\ContentTypeHelper.cs:line 170

   at Umbraco.Courier.Persistence.V6.NHibernate.Persisters.ContentPropertyDataItem.PersistItem[T](T item) in c:\Program Files (x86)\teamcity\buildAgent\work\650bafc4b83aa858\Core\Umbraco.Courier.Persistence.V6.NHibernate\Persisters\ContentPropertyData.cs:line 76

   at Umbraco.Courier.ItemProviders.PropertyItemProvider.HandleExtract(Item item)

   at Umbraco.Courier.Core.ItemProvider.Extract(Item item)

   at Umbraco.Courier.RepositoryProviders.Local.ExtractItem(Item item, Boolean overwrite)

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.extractItem(GraphNode node, Boolean isDependency)

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.extractReadyRevisionBatch()

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.extractReadyRevisionBatch()

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.Extract() ---> System.NullReferenceException: Object reference not set to an instance of an object.

   at Umbraco.Courier.Persistence.V6.NHibernate.Helpers.ContentTypeHelper.GetPropertyTypesRecursively(CmsContentType ct, ISession session) in c:\Program Files (x86)\teamcity\buildAgent\work\650bafc4b83aa858\Core\Umbraco.Courier.Persistence.V6.NHibernate\Helpers\ContentTypeHelper.cs:line 175

   at Umbraco.Courier.Persistence.V6.NHibernate.Helpers.ContentTypeHelper.GetPropertyTypesRecursively(String ct, Guid nodeObjectType, ISession session) in c:\Program Files (x86)\teamcity\buildAgent\work\650bafc4b83aa858\Core\Umbraco.Courier.Persistence.V6.NHibernate\Helpers\ContentTypeHelper.cs:line 170

   at Umbraco.Courier.Persistence.V6.NHibernate.Persisters.ContentPropertyDataItem.PersistItem[T](T item) in c:\Program Files (x86)\teamcity\buildAgent\work\650bafc4b83aa858\Core\Umbraco.Courier.Persistence.V6.NHibernate\Persisters\ContentPropertyData.cs:line 76

   at Umbraco.Courier.ItemProviders.PropertyItemProvider.HandleExtract(Item item)

   at Umbraco.Courier.Core.ItemProvider.Extract(Item item)

   at Umbraco.Courier.RepositoryProviders.Local.ExtractItem(Item item, Boolean overwrite)

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.extractItem(GraphNode node, Boolean isDependency)

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.extractReadyRevisionBatch()

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.extractReadyRevisionBatch()

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.Extract()

   --- End of inner exception stack trace ---

   at Umbraco.Courier.Core.Extraction.RevisionExtraction.Extract()

   at Umbraco.Courier.Core.Tasks.ExtractionTask.Run()

   at Umbraco.Courier.Core.TaskManager.manageTask(IRevisionTask value)

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