Drag and Drop S# Designer error

I cant drap and drop any tools from Palette this is the error log when I try to do this :

Name Time Type Message DesignerConnector 1/1/0001 12:00:00 AM Info New portfolio Simulator created. DesignerConnector 1/1/0001 12:00:00 AM Info New portfolio 0 created. DesignerConnector 1/1/0001 12:00:00 AM Info New portfolio Binance_1516679370 created. S#.Designer 3/24/2018 9:01:04 PM Error "System.Windows.Markup.XamlParseException: Provide value on 'System.Windows.Baml2006.TypeConverterMarkupExtension' threw an exception. ---> System.InvalidOperationException: Property path is not valid. 'dje_qJ43ZG62TTY4EEHLZ3AX77CFZJR88XRGJ58ZNKM22WYJZNWLEKREKHJ2VVYAQ8SDG4KL89TXYX5GUF_ejd' does not have a public property named 'AllowDrop'. at System.Windows.PropertyPath.ResolvePropertyName(String name, Object item, Type ownerType, Object context, Boolean throwOnError) at System.Windows.PropertyPath.ResolvePathParts(ITypeDescriptorContext typeDescriptorContext) at System.Windows.PropertyPath..ctor(String path, ITypeDescriptorContext typeDescriptorContext) at System.Windows.PropertyPathConverter.ConvertFrom(ITypeDescriptorContext typeDescriptorContext, CultureInfo cultureInfo, Object source) at MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(MarkupExtension me, IServiceProvider serviceProvider) --- End of inner exception stack trace --- at System.Windows.Markup.XamlReader.RewrapException(Exception e, IXamlLineInfo lineInfo, Uri baseUri) at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlReader templateReader, XamlObjectWriter currentWriter) at System.Windows.FrameworkTemplate.LoadTemplateXaml(XamlObjectWriter objectWriter) at System.Windows.FrameworkTemplate.LoadOptimizedTemplateContent(DependencyObject container, IComponentConnector componentConnector, IStyleConnector styleConnector, List1 affectedChildren, UncommonField1 templatedNonFeChildrenField) at System.Windows.FrameworkTemplate.LoadContent(DependencyObject container, List1 affectedChildren) at System.Windows.StyleHelper.ApplyTemplateContent(UncommonField1 dataField, DependencyObject container, FrameworkElementFactory templateRoot, Int32 lastChildIndex, HybridDictionary childIndexFromChildID, FrameworkTemplate frameworkTemplate) at System.Windows.FrameworkTemplate.ApplyTemplateContent(UncommonField`1 templateDataField, FrameworkElement container) at System.Windows.FrameworkElement.ApplyTemplate() at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint) at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint) at System.Windows.FrameworkElement.MeasureCore(Size availableSize) at System.Windows.UIElement.Measure(Size availableSize) at DevExpress.Xpf.Core.FloatingContainer.GetLayoutAutoSize() at DevExpress.Xpf.Core.FloatingWindowContainer.EnsureAutoSize(Size size) at DevExpress.Xpf.Core.FloatingWindowContainer.UpdateFloatingBoundsCore(Rect bounds) at DevExpress.Xpf.Core.FloatingContainer.OnFloatingBoundsChanged(Rect bounds) at DevExpress.Xpf.Core.BaseFloatingContainer.OnFloatingBoundsChanged(DependencyObject dObj, DependencyPropertyChangedEventArgs e) at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args) at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType) at System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal) at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value) at DevExpress.Xpf.Core.Native.FloatingContainerDragElement.UpdateLocation(Point newPos) at DevExpress.Xpf.Core.Native.DragDropElementHelper.UpdateDragElementLocation(Point newPos) at DevExpress.Xpf.Core.Native.DragDropElementHelper.OnMouseMoveIndependentCore(Object sender, IndependentMouseEventArgs e, Boolean isLeave) at DevExpress.Xpf.Core.Native.DragDropElementHelper.OnPreviewMouseMove(Object sender, MouseEventArgs e) at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target) at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs) at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised) at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args) at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args) at System.Windows.Input.InputManager.ProcessStagingArea() at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input) at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport) at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel) at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)"