Error exporting CONF20 to PDF on c.a.c

[ERROR] Fri Jan 13 05:56:25 CST 2006 [com.atlassian.confluence.importexport.impl.PdfExporter] Error while generating PDF!
Throwable:
org.apache.fop.apps.FOPException: file:/opt/java/src/confluence/deployments/conf.atlassian.com/home/temp/export_01132006_055225/CONF20-20060113-05_52_25.fo:4684:195 The id "Site Administrators and their permissions" already exists in this document
at org.apache.fop.datatypes.IDReferences.createID(IDReferences.java:119)
at org.apache.fop.fo.flow.Block.layout(Block.java:203)
at org.apache.fop.fo.flow.AbstractFlow.layout(AbstractFlow.java:154)
at org.apache.fop.fo.flow.AbstractFlow.layout(AbstractFlow.java:110)
at org.apache.fop.fo.pagination.PageSequence.makePage(PageSequence.java:400)
at org.apache.fop.fo.pagination.PageSequence.format(PageSequence.java:338)
at org.apache.fop.apps.StreamRenderer.render(StreamRenderer.java:262)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:223)
at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.apache.fop.apps.Driver.render(Driver.java:498)
at com.atlassian.confluence.importexport.impl.PdfExporter.generatePDF(PdfExporter.java:208)
at com.atlassian.confluence.importexport.impl.PdfExporter.doExportEntity(PdfExporter.java:166)