I have the following configuration

<ig:XamComboEditor Grid.Column="2" Width="300"
ItemsSource="{Binding Entities}"
SelectedItem="{Binding SelectedEntity}"
DisplayMemberPath="Name"
AllowFiltering="True">
</ig:XamComboEditor>

When I search I get a NullReferenceException. If I remove the DisplayMemberPath="Name" property the exception goes away. Please help.

Stack trace

at Infragistics.DataManagerBase.BuildPropertyExpressionFromPropertyName(String propertyName, ParameterExpression paramExpression, CachedTypedInfo cachedTypedInfo, Type propertyType, Object defaultValue)
at Infragistics.Controls.Editors.ComboEditorBase`2.CreateComplexPropertyCondition(Type dataType, String fieldName, String filterText, Expression`1 filterExpression, CachedTypedInfo cachedTypedInfo)
at Infragistics.Controls.Editors.ComboEditorBase`2.GetStartsWithCondition(Type dataType, String fieldName, String filterText, CachedTypedInfo cachedTypedInfo)
at Infragistics.Controls.Editors.ComboEditorBase`2.SearchAndFilterItemsByText(String text, Boolean performAutoComplete)
at Infragistics.Controls.Editors.ComboEditorBase`2.ProcessEditorText(Boolean allowDropDown, Boolean attemptAutoComplete)
at Infragistics.Controls.Editors.ComboEditorBase`2.DelayTracker_Tick(Object sender, EventArgs e)
at System.Windows.Threading.DispatcherTimer.FireTick(Object unused)
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)