InvalidOperationException thrown accessing Get of a Navigation Property

Here is the stack trace when the navigation property was accessed. Which was hard to track down, because it was being accessed because the entities properties were individually bound to an interface grid cell (the get call to the navigation property popped the exception). As the stack trace below illustrates it really doesn't get past the get call.

This table has a FK key back to a another table and that happens to be the pk of the table too. I don't get to control that... but I have to deal with it... :P

Is 5.0.6 my fix? I am using 5.0.3 right now. Is 5.0.5 a fix? I am going to try in any case (nothing left to do...).

Do let me know if you can use any more info.

===Stack Trace===

System.InvalidOperationException occurred
  Message=You may not change the entity’s EntityKey (currently ‘ElementHistory: -9223372036854747107’) while any of its related, dependent entities are in the entity cache. Are you sure you want to change the EntityKey? Consider reordering your operations such that you set the EntityKey first. Alternatively you could detach the entity or remove its dependent entities before trying again but be aware that you risk orphaning the dependent entities.
  Source=IdeaBlade.EntityModel
  StackTrace:
       at IdeaBlade.EntityModel.ScalarEntityReference`1.UpdateOtherProperties(EntityRelationLink relationLink, EntityWrapper fromEntity, EntityWrapper toEntity)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.UpdateFkForNewToEntity(EntityWrapper toEntity)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.SetEntity(T newValue, Boolean updateFkValues, Boolean updateInverseValues)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.AddEntity(Object entity, Boolean updateInverseValues)
       at IdeaBlade.EntityModel.RelatedEntityList`1.AddInverse(T otherEntity)
       at IdeaBlade.EntityModel.RelatedEntityList`1.AddOrInsert(Int32 index, T item, Boolean updateInverse)
       at IdeaBlade.EntityModel.RelatedEntityList`1.Add(T item, Boolean updateInverse)
       at IdeaBlade.EntityModel.ListEntityReference`1.AddEntity(Object entity, Boolean updateInverse)
       at IdeaBlade.EntityModel.ListEntityReference`1.FixupReferences()
       at IdeaBlade.EntityModel.EntityWrapper.<FixupReferences>b__13(EntityReferenceBase eref)
       at IdeaBlade.Core.EnumerableFns.ForEach[T](IEnumerable`1 items, Action`1 action)
       at IdeaBlade.EntityModel.EntityWrapper.FixupReferences()
       at IdeaBlade.EntityModel.EntityWrapper.TrackChanged(EntityChangedEventArgs e)
       at IdeaBlade.EntityModel.EntityGroup.OnEntityChanged(EntityChangedEventArgs e)
       at IdeaBlade.EntityModel.EntityGroup.AddQueriedEntity(EntityWrapper wrapper)
       at IdeaBlade.EntityModel.EntityGroup.LoadEntity(EntityWrapper sourceWrapper, MergeStrategy mergeStrategy, Boolean& rowUpdated)
       at IdeaBlade.EntityModel.EntityMerger.MergeEntityCore(EntityWrapper sourceWrapper, EntityGroup targetEntityGroup)
       at IdeaBlade.EntityModel.EntityMerger.MergeEntity(EntityWrapper sourceWrapper, EntityGroup targetEntityGroup, NavigationContext context)
       at IdeaBlade.EntityModel.EntityMerger.<>c__DisplayClass1.<MergeEntities>b__0(EntityWrapper sourceWrapper)
       at System.Linq.Enumerable.<>c__DisplayClass12`3.<CombineSelectors>b__11(TSource x)
       at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
       at IdeaBlade.Core.EnumerableFns.ForEach[T](IEnumerable`1 items, Action`1 action)
       at IdeaBlade.EntityModel.DataBlockFns.MakeResultList(Type type, IEnumerable items, Boolean isOrdered)
       at IdeaBlade.EntityModel.EntityQueryResult.UpdateDataSet(EntitiesDataBlock block, NavigationContext context)
       at IdeaBlade.EntityModel.EntitiesDataBlock.Resolve(EntityQueryResult helper)
       at IdeaBlade.EntityModel.EntityQueryResult..ctor(DataQueryResult dataQueryResult, EntityManager entityManager, MergeStrategy mergeStrategy, Guid queryId, QueryInfo queryInfo)
       at IdeaBlade.EntityModel.EntityQueryResultCollection..ctor(DataQueryResultCollection dqResults, EntityManager entityManager, MergeStrategy mergeStrategy)
       at IdeaBlade.EntityModel.EntityManager.MergeAndReturnDataSourceOnly(IEntityFinder finder, DataQueryResultCollection dqResults)
       at IdeaBlade.EntityModel.EntityManager.ProcessFetchedData(DataQueryResultCollection dqResults, IEntityFinder finder)
       at IdeaBlade.EntityModel.EntityManager.ExecuteFetch(IEntityFinder finder)
       at IdeaBlade.EntityModel.EntityKeyFinder.Execute()
       at IdeaBlade.EntityModel.EntityManager.ExecuteQueryCore(IEntityQuery query, Boolean isAsync)
       at IdeaBlade.EntityModel.EntityManager.ExecuteQuery(IEntityQuery query)
       at IdeaBlade.EntityModel.EntityManager.FirstOrNullEntity(IEntityQuery query)
       at IdeaBlade.EntityModel.EntityQueryExtensions.FirstOrNullEntity(IEntityQuery query)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.QueryForEntity(EntityReferenceStrategy strategy)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.GetEntity(EntityReferenceStrategy strategy)
       at IdeaBlade.EntityModel.ScalarEntityReference`1.GetValue()
       at IdeaBlade.EntityModel.NavigationScalarEntityProperty`2.<.ctor>b__0(NavigationEntityPropertyGetInterceptorArgs`2 args)
       at IdeaBlade.Core.PropertyInterceptor`3.HandleAction(Action`1 action, TArgs args)
       at IdeaBlade.Core.PropertyInterceptor`3.<BuildTargetedCombinedAction>b__3(TArgs args)
       at IdeaBlade.Core.PropertyInterceptor`3.ExecuteActions(TArgs args)
       at IdeaBlade.Core.PropertyInterceptor`3.GetValue(TInstance instance, Object context)
       at IdeaBlade.Core.PropertyInterceptor`3.GetValue(TInstance instance)
       at IdeaBlade.EntityModel.NavigationScalarEntityProperty`2.GetValue(TInstance instance)
       at Dal.Model.ElementSummary.get_ElementHistory()