I have a .ascx which includes an UltraWebMenu.  After upgrading from CLR 2.0 v6.3 to v7.3, I get the following error:

'ExpandEffects' is ambiguous in the namespace 'Infragistics.WebUI.UltraWebNavigator'

Here's the code:

<ignav:UltraWebMenu ID="uwmAgencyUser" Font-Names="Verdana" Height="8px" runat="server"
    Width="413px" TopAligment="Center" BackColor="#B5CCFA" BorderWidth="0px" JavaScriptFilename=""
    JavaScriptFileNameCommon="" LeafItemImageUrl="" ParentItemImageUrl="" SeparatorClass="">
    <ItemStyle BorderWidth="0px" BorderColor="Transparent" BorderStyle="Solid" />
    <Styles>
        <ignav1:Style Cursor="Default" BorderWidth="1px" BorderColor="#316AC5" BorderStyle="Solid"
            BackColor="#F4B647" CssClass="TopHover9"></ignav1:Style>
        <ignav1:Style BorderWidth="1px" BorderColor="#B5CCFA" BorderStyle="Solid" ForeColor="Black"
            BackgroundImage="None" BackColor="#B5CCFA" CssClass="TopClass9"></ignav1:Style>
    </Styles>
    <DisabledStyle ForeColor="LightGray"></DisabledStyle>
    <HoverItemStyle Cursor="Default" BorderWidth="0px" BorderColor="#316AC5" BorderStyle="Solid"
        ForeColor="Black" BackColor="#FCEFC3"></HoverItemStyle>
    <IslandStyle Cursor="Default" BorderWidth="1px" Font-Size="8pt" Font-Names="MS Sans Serif"
        BorderColor="Black" BorderStyle="Solid" ForeColor="Black" BackColor="WhiteSmoke"></IslandStyle>
    <ExpandEffects ShadowColor="Black" Type="Fade" />
    <TopSelectedStyle BorderColor="Black" ForeColor="Black" BackColor="#C3DCFF"></TopSelectedStyle>
    <SeparatorStyle BackgroundImage="ig_menuSep.gif" CustomRules="background-repeat:repeat-x; "></SeparatorStyle>
    <Levels>
        <ignav1:Level LevelHoverClass="" LevelHiliteClass="" ColumnName="" TargetFrameName=""
            ImageColumnName="" LevelClass="" LevelImage="" Index="0" LevelKeyField="" RelationName=""
            CheckboxColumnName="" LevelIslandClass="" TargetUrlName="" LevelCheckBoxes="False"></ignav1:Level>
        <ignav1:Level LevelHoverClass="" LevelHiliteClass="" ColumnName="" TargetFrameName=""
            ImageColumnName="" LevelClass="" LevelImage="" Index="1" LevelKeyField="" RelationName=""
            CheckboxColumnName="" LevelIslandClass="" TargetUrlName="" LevelCheckBoxes="False"></ignav1:Level>
        <ignav1:Level LevelHoverClass="" LevelHiliteClass="" ColumnName="" TargetFrameName=""
            ImageColumnName="" LevelClass="" LevelImage="" Index="2" LevelKeyField="" RelationName=""
            CheckboxColumnName="" LevelIslandClass="" TargetUrlName="" LevelCheckBoxes="False"></ignav1:Level>
        <ignav1:Level LevelHoverClass="" LevelHiliteClass="" ColumnName="" TargetFrameName=""
            ImageColumnName="" LevelClass="" LevelImage="" Index="3" LevelKeyField="" RelationName=""
            CheckboxColumnName="" LevelIslandClass="" TargetUrlName="" LevelCheckBoxes="False"></ignav1:Level>
    </Levels>
    <Items [OMITTED] />
    <Images [OMITTED] />
    <MenuClientSideEvents InitializeMenu="" ItemChecked="" ItemClick="" ItemHover="" SubMenuDisplay="" />
</ignav:UltraWebMenu>

And attached is a screenshot of my crash and burn page.