I found in my example data that the FDGC datastream has an error:

{{`}}xml
<foxml:datastream ID="FGDC" STATE="A" CONTROL_GROUP="X" VERSIONABLE="true">
<foxml:datastreamVersion ID="FGDC.0" LABEL="FGDC Record" CREATED="2013-09-30T16:54:47.703Z" MIMETYPE="text/xml" SIZE="7387">
<foxml:xmlContent>
<metadata xmlns:fgdc="http://localhost">
<idinfo><citation><citeinfo><origin>119</origin><pubdate>Unpublished material</pubdate><title>Cato/Cunn 6C</title><geoform>remote sensing image</
...

should be either

<metadata xmlns="http://localhost">

or all the element names must have the namespace in front.