Excel 2007 Exporting to XML - ERROR 1B6: Object doesn't support this property, from fnMapRangeWithXml

I am trying to export a data range in Excel 2007 to XML.   I have done this from this from the same spreadsheet previously.  But mow I'm getting an error:

   fnMapRangeWithXml 
    ERROR 1B6: Object doesn't support this property

when I click OK on the 'Convert range to XML list' Dialog, it tells me:
   Lists in selection must be converted to ranges to continue.

When I click Yes.  I get the error.

Previously I used to get an Error (can't swear whether it was the same Error), but I used to be able to go to theDeveloper Tab anyway and use theExport Button to export my XML to a File, but now theExport XMLDialog does not appear.

The Xmltools Add-in is currently active.

Any ideas how to fix the problem?