错误：“无法创建未知类型\'{clr-namespace：NameSpace.Properties}设置”。

<ResourceDictionary xmlns=\"http://schemas.microsoft.com/winfx/2006/xaml/presentation\"
                    xmlns:x=\"http://schemas.microsoft.com/winfx/2006/xaml\"
                    xmlns:properties=\"clr-namespace:Kavand.UI.Properties\">
    <ResourceDictionary.MergedDictionaries>
        <ResourceDictionary>
            <properties:Settings x:Key=\"settings\" />
        </ResourceDictionary>
    </ResourceDictionary.MergedDictionaries>
    <Style x:Key=\"PopupMenu_StackPanel\">
        <Setter Property=\"TextBlock.FontSize\" Value=\"{Binding Source={StaticResource settings}, Path=Default.Font_Menu_Size}\" />
        <Setter Property=\"TextBlock.FontFamily\" Value=\"{Binding Source={StaticResource settings}, Path=Default.Font_Menu_Family}\" />
        <Setter Property=\"TextBlock.FontWeight\" Value=\"{Binding Source={StaticResource settings}, Path=Default.Font_Menu_Weight}\" />
        <Style.Resources>
            <Style TargetType=\"{x:Type MenuItem}\" BasedOn=\"{StaticResource KavandMenuItem}\">
                <Style.Triggers>
                    <Trigger Property=\"IsChecked\" Value=\"true\">
                        <Setter Property=\"IsEnabled\" Value=\"false\" />
                    </Trigger>
                    <MultiTrigger>
                        <MultiTrigger.Conditions>
                            <Condition Property=\"IsChecked\" Value=\"True\" />
                            <Condition Property=\"IsHighlighted\" Value=\"True\" />
                        </MultiTrigger.Conditions>
                        <Setter Property=\"Foreground\" Value=\"{DynamicResource K_Brush_Gray}\" />
                    </MultiTrigger>
                </Style.Triggers>
            </Style>
        </Style.Resources>
    </Style>
</ResourceDictionary>