Hey this bug exist in older versions but also in the new 6.0! Must be fixed!!!!
CreateDocx.inc line 4666
BEFORE:
if (isset($layout[$paperType]['marginFooter'])) {
$sectionNode->getElementsByTagName('pgMar')->item(0)->setAttribute('w:footer', $layout['marginFooter']);
}
AFTER FIX:
if (isset($layout['marginFooter'])) {
$sectionNode->getElementsByTagName('pgMar')->item(0)->setAttribute('w:footer', $layout['marginFooter']);
}