Hi,
I am using the following ribbon XML to hide options in the backstage menu for Excel 2010 - 2013
<backstage>
	<button idMso="ApplicationOptionsDialog" visible="false"/>
        <tab idMso="TabNew" visible="false"/>
        <tab idMso="TabInfo" visible="false"/>
        <tab idMso="TabRecent" visible="false"/>
	<tab idMso="TabPrint" visible="false"/>
        <tab idMso="TabShare" visible="false"/>
        <tab idMso="TabHelp" visible="false"/>
        <tab idMso="TabPublish" visible="false"/>
        <tab idMso="TabSave" visible="false"/>
        <tab idMso="TabOfficeStart" visible="false"/>
	<button idMso="FileSave" visible="false"/>
	<button idMso="FileSaveAs" visible="false"/>
	<button idMso="FileOpen" visible="false"/>
    </backstage>
This works fine with Excel 2010, but with 2013 (when clicking on the File menu) 3 errors are displayed:

Failed to Find Office Control by ID TabNew
then
Failed to Find Office Control by ID FileSaveAs
then
Failed to Find Office Control by ID FileOpen

According to this link it should work in 20120 & 2013:
http://www.rondebruin.nl/win/s2/win005.htm

I cannot fathom why I have this problem.

Richard