Missing line results in ABBYY output

[stweil]

Latest releases only produce an ABBYY file without any OCR results:

<document xmlns="http://www.abbyy.com/FineReader_xml/FineReader10-schema-v1.xml" version="1.0" producer="kraken">
        <page width="1424" height="2332" resolution="0" originalCoords="1">
                <block blockType="Text">
                        <text>
                                <par>
                                                                </par>
                        </text>
                </block>
        </page>
</document>