hello!

i'm trying to update content programmaticly in Umbraco 5.01 but i get the folowing exceptions when hive trys to flush the data to the database : 

The INSERT statement conflicted with the FOREIGN KEY constraint "U5_FK_Attribute_AttributeLongStringValues". The conflict occurred in database "umbSchouwburgAmstelveen_umb5", table "dbo.Attribute", column 'Id'.
The statement has been terminated.

The werd part is that i use simmeler code in a nother project where i don't have the problem. ther the document type is less complex tho.

here is my code:

protected virtual void AddOrUpdate(IEnumerable<TType> items, string parentId, RevisionStatusType revisionStatus)
        {
            var documentType = DocumentType;
            using(var writer = Context.Hive.OpenWriter<IContentStore>())
            {
                var contentRepository = new List<ContentEditorModel>();
                foreach (var item in items)
                {
                    ContentEditorModel model = null;
                    if (item.ID != null)// && writer.Repositories.Exists<TypedEntity>(new HiveId(item.ID)))
                    {
                        var entity = writer.Repositories.Revisions.GetLatestSnapshot<TypedEntity>(new HiveId(item.ID));
                        entity.Revision.Item.EntitySchema =
                            writer.Repositories.Schemas.GetComposite<EntitySchema>(entity.Revision.Item.EntitySchema.Id);
                        model = Context.FrameworkContext.TypeMappers
                            .Map<EntitySnapshot<TypedEntity>, ContentEditorModel>(entity);
                    }
                    else
                    {
                        model = new ContentEditorModel();
                        model.DocumentTypeAlias = DocumentTypeAlias;
                        model.DocumentTypeId = documentType.Id;
                        model.DocumentTypeName = documentType.Name;
                        model.Id = new HiveId(Guid.NewGuid());
                        if (documentType.DefaultTemplateId != null)
                        {
                            SetProperty(model, SelectedTemplateAttributeDefinition.AliasValue,
                                        new Dictionary<string, object>()
                                        {
                                            {"TemplateId", DocumentType.DefaultTemplateId.ToString()}
                                        });
                        }
                    }
                    if(!string.IsNullOrEmpty(parentId))
                        model.ParentId = new HiveId(parentId);
                    UpdateContent(model, item);
                    contentRepository.Add(model);
                    item.ID = model.Id.ToString();
                }
                //map model with Revision<TypedEntity>
                var mappedCollection =
                    Context.FrameworkContext.TypeMappers.Map
                        <IEnumerable<ContentEditorModel>, IEnumerable<Revision<TypedEntity>>>(contentRepository);
                if(revisionStatus != null)
                    mappedCollection.ForEach(x => x.MetaData.StatusType = revisionStatus);
                //add or update model
                writer.Repositories.Revisions.AddOrUpdate(mappedCollection);
                writer.Complete();

protected void SetProperty(ContentEditorModel model, string propertyAlias, object propertyValue)
        {
            propertyValue = propertyValue ?? new Dictionary<string, object>();

            //TODO: fix hack with datetime when bug fixed with datetime in umbraco
            if(propertyValue is DateTime && ((DateTime)propertyValue) == DateTime.MinValue)
            {
                propertyValue = new DateTime(1900, 3, 4, 5, 6, 7);
            }

            var docTypeProperty = DocumentType.Properties.Single(x => x.Alias == propertyAlias);

            //NOTE: If the Umbraco API changes (an extra overload is added to new ContentProperty), this might break
            var dictionary = propertyValue as IDictionary<string, object> ?? new Dictionary<string, object> { { "Value", propertyValue } };

            var property = model.Properties.FirstOrDefault(o => o.Alias == propertyAlias);
            if (property != null)
            {
                property.PropertyEditorModel.SetModelValues(dictionary);
            }
            else
            {
                property = new ContentProperty(docTypeProperty.Id, docTypeProperty, dictionary)
                {
                    Alias = propertyAlias,
                    TabId = DocumentType.DefinedTabs.Single(x => x.Alias == FixedGroupDefinitions.GeneralGroup.Alias).Id
                };
                model.Properties.Add(property);
            }
        }