I created an xsl stylesheet to convert OpenOffice Writer documents into OSIS XML based on a stylesheet to convert ODT files to TEI XML. Download and unzip the archive and follow the instructions in the PDF file provided. Keep in mind it does not work with version 3.x of OpenOffice. I isolated and commented out the XSLT code that causes the write error, but I don't know how to fix it. Anyone who wants to work on it may do so by downloading the latest, which is opendoc2osis.xsl, attached below.