WWUPWPPP

//Verze 2.2012.164.0
//NTB_ACER_ASPIRE
//Windows 7 x86 Service Pack 1 v6.1.7601
//28.4.2012 1:26:47

System.InvalidOperationException: Entering state 'GetObjectsNonReenterant' from state 'GetObjectsNonReenterant' is prohibited due to state 'GetObjectsNonReenterant' for ' [DevExpress.Xpo.UnitOfWork](273)'. Most probably, you are trying to initiate an object loading operation while the previous object loading operation is not yet completed. Postpone your operation until the Session.ObjectsLoaded or IXPObject.OnLoaded event is fired (while Session.IsObjectsLoading is true). Another cause of this exception is that you are trying to work simultaneously with the same session from different threads.
   v DevExpress.Xpo.Helpers.SessionStateStack.ThrowIfCantEnter(Session session, SessionState newState)
   v DevExpress.Xpo.Helpers.SessionStateStack.Enter(Session session, SessionState newState)
   v DevExpress.Xpo.Helpers.ObjectCollectionLoader.LoadObjects(ObjectsQuery[] queries)
   v DevExpress.Xpo.SimpleObjectLayer.LoadObjects(Session session, ObjectsQuery[] queries)
   v DevExpress.Xpo.Session.GetObjectsInternal(ObjectsQuery[] queries)
   v DevExpress.Xpo.Session.<>c__DisplayClasse.<GetObjects>b__c()
   v DevExpress.Xpo.Logger.LogManager.Log[T](String category, LogHandler`1 handler, MessageHandler`1 createMessageHandler)
   v DevExpress.Xpo.Session.GetObjects(ObjectsQuery[] queries)
   v DevExpress.Xpo.Session.GetObjects(ObjectsQuery query)
   v DevExpress.Xpo.XPBaseCollection.Load()
   v DevExpress.Xpo.XPBaseCollection.get_Objects()
   v DevExpress.Xpo.XPBaseCollection.System.Collections.IEnumerable.GetEnumerator()
   v DevExpress.Data.Filtering.Helpers.CollectionContexts.GetEnumerator()
   v DevExpress.Data.Filtering.Helpers.ExpressionEvaluatorCoreBase.DoAggregate(AggregateProcessingParam param, IEnumerable contextsCollection, CriteriaOperator filterExpression, CriteriaOperator expression)
   v DevExpress.Data.Filtering.Helpers.ExpressionEvaluatorCoreBase.DoAggregate(Aggregate aggregateType, IEnumerable contextsCollection, CriteriaOperator filterExpression, CriteriaOperator expression)
   v DevExpress.Data.Filtering.Helpers.ExpressionEvaluatorCore.DevExpress.Data.Filtering.IClientCriteriaVisitor.Visit(AggregateOperand theOperand)
   v DevExpress.Data.Filtering.AggregateOperand.Accept(ICriteriaVisitor visitor)
   v DevExpress.Data.Filtering.Helpers.ExpressionEvaluatorCoreBase.Process(CriteriaOperator operand)
   v DevExpress.Data.Filtering.Helpers.ExpressionEvaluatorCoreBase.Evaluate(EvaluatorContext evaluationContext, CriteriaOperator evaluatorCriteria, IComparer customComparer)
   v DevExpress.Data.Filtering.Helpers.ExpressionEvaluator.Evaluate(Object theObject, IComparer customComparer)
   v DevExpress.Data.Filtering.Helpers.ExpressionEvaluator.Evaluate(Object theObject)
   v DevExpress.Xpo.XPBaseObject.Evaluate(CriteriaOperator expression)
   v DevExpress.Xpo.XPBaseObject.EvaluateAlias(String memberName)
   v Elite.Objects.Pacient.get_AktualniRegistraceDatum()
   v (Object )
   v DevExpress.Xpo.Metadata.ReflectionMemberInfo.DelegateFieldAccessor.GetValue(Object theObject)
   v DevExpress.Xpo.Metadata.ReflectionMemberInfo.GetValue(Object theObject)
   v DevExpress.Xpo.Helpers.XPPropertyDescriptor.MemberAccessor.GetValue(Object obj)
   v DevExpress.Xpo.Helpers.XPPropertyDescriptor.GetValue(Object component)
   v DevExpress.Data.Helpers.BaseListDataControllerHelper.GetRowValue(Int32 listSourceRow, Int32 column, OperationCompleted completed)
   v DevExpress.Data.DataController.GetRowValue(Int32 controllerRow, Int32 column, OperationCompleted completed)
   v DevExpress.Data.BaseListSourceDataController.GetRowValue(Int32 controllerRow, Int32 column, OperationCompleted completed)
   v DevExpress.XtraGrid.Views.Grid.GridView.GetRowCellValue(Int32 rowHandle, GridColumn column, OperationCompleted completed)
   v DevExpress.XtraGrid.Views.Grid.GridView.GetRowCellValue(Int32 rowHandle, GridColumn column)
   v DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.CalcRowCellDrawInfo(GridDataRowInfo ri, GridColumnInfoArgs ci, GridCellInfo cell, GridColumnInfoArgs nextColumn, Boolean calcEditInfo)
   v DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.CalcRowCellsDrawInfo(GridDataRowInfo ri, GridColumnsInfo columnsInfo)
   v DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.CalcDataRow(GridDataRowInfo ri, GridRow row, GridRow nextRow)
   v DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.CalcRowsDrawInfo()
   v DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.CalcGridInfo()
   v DevExpress.XtraGrid.Views.Grid.ViewInfo.GridViewInfo.Calc(Graphics g, Rectangle bounds)
   v DevExpress.XtraGrid.Views.Base.ColumnView.DoInternalLayout()
   v DevExpress.XtraGrid.Views.Base.ColumnView.CalculateLayout()
   v DevExpress.XtraGrid.Views.Base.BaseView.CalculateLayoutSynchronized()
   v DevExpress.XtraGrid.Views.Base.BaseView.CheckViewInfo()
   v DevExpress.XtraGrid.Views.Base.BaseView.Draw(GraphicsCache e)
   v DevExpress.XtraGrid.GridControl.OnPaint(PaintEventArgs e)
   v System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
   v System.Windows.Forms.Control.WmPaint(Message& m)
   v System.Windows.Forms.Control.WndProc(Message& m)
   v DevExpress.XtraEditors.Container.EditorContainer.WndProc(Message& m)
   v DevExpress.XtraGrid.GridControl.WndProc(Message& m)
   v System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   v System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   v System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)