The reason is that you don't have any tabs in your xamRibbon. The templates weren't set up to handle this because the MS Office UI guidelines indicate that tabs are a requirement when using the Ribbon UI. Even in Office 2010 where you are allowed to hide tabs it does not allow you to hide all the tabs. So while we can adjust the templates to allow for this (it should be in an upcoming SR) it would seem that technically this violates your license agreement with MS to use the Ribbon UI in your application.

Hi!

I have the same problem, here's the code

<igRibbon:XamRibbonWindow 

    x:Class="Window1"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:igRibbon="http://infragistics.com/Ribbon"

xmlns:igEditors="http://infragistics.com/Editors"

xmlns:igWindows="http://infragistics.com/Windows"

    Title="Window1" Height="397" Width="587">

    <igRibbon:RibbonWindowContentHost>

        <igRibbon:RibbonWindowContentHost.Ribbon>

            <igRibbon:XamRibbon x:Name="myRibbon" DockPanel.Dock="Top" Theme="Office2k7Silver">

            </igRibbon:XamRibbon>

        </igRibbon:RibbonWindowContentHost.Ribbon>

    </igRibbon:RibbonWindowContentHost>

</igRibbon:XamRibbonWindow >