Xconfmanger error (Windchill 11.0 M010)

Hi,

We are in process to upgrade. I installed windchill 11.0 M010. Put all customization files(class files, custom xconf etc) through build. When i am trying to propagate the changes it throws following error

com.ptc.windchill.structconf.xconf.XconfException: Error parsing file:/F:/ptc/Windchill_11.0/Windchill/codebase/wt.properties.xconf, line 218 (starting at rootdoc file:/F:/ptc/Windchill_11.0/Windchill/declarations.xconf)

at com.ptc.windchill.structconf.xconf.XconfParser.parse(XconfParser.java:241)

at com.ptc.windchill.structconf.xconf.XconfParser.parse(XconfParser.java:203)

at com.ptc.windchill.structconf.xconf.XconfUtil.processDeclarationXconfFiles(XconfUtil.java:141)

at com.ptc.windchill.structconf.xconf.XconfUtil.processAllXconfFiles(XconfUtil.java:192)

at com.ptc.windchill.structconf.RebuildAnalyzer.scanXconfsForDependencies(RebuildAnalyzer.java:360)

at com.ptc.windchill.structconf.RebuildAnalyzer.outOfDate(RebuildAnalyzer.java:525)

at com.ptc.windchill.structconf.RebuildAnalyzer.shouldPropagate(RebuildAnalyzer.java:781)

at com.ptc.windchill.structconf.StructConfManager.propagate(StructConfManager.java:194)

at com.ptc.windchill.structconf.Propagate.execute(Propagate.java:57)

at com.ptc.windchill.structconf.StructConfManagerCommand.execute(StructConfManagerCommand.java:102)

at com.ptc.windchill.structconf.StructConfManager.execute(StructConfManager.java:259)

at com.ptc.windchill.structconf.StructConfManager.execute(StructConfManager.java:273)

at com.ptc.windchill.structconf.StructConfManager.main(StructConfManager.java:820)

Caused by: org.xml.sax.SAXParseException; systemId: file:/F:/ptc/Windchill_11.0/Windchill/codebase/wt.properties.xconf; lineNumber: 218; columnNumber: 296; Attribute "unlessAssembly" must be declared for element type "Property".

at org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)

at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source)

at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)

at org.apache.xerces.impl.dtd.XMLDTDValidator.addDTDDefaultAttrsAndValid

ate(Unknown Source)

at org.apache.xerces.impl.dtd.XMLDTDValidator.handleStartElement(Unknown Source)

at org.apache.xerces.impl.dtd.XMLDTDValidator.emptyElement(Unknown Source)

at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(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.XML11Configuration.parse(Unknown Source)

at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)

at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)

at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)

at org.apache.xerces.jaxp.SAXParserImpl.parse(Unknown Source)

at com.ptc.windchill.structconf.xconf.XconfParser.parse_(XconfParser.java:573)

at com.ptc.windchill.structconf.xconf.XconfParser.recurseIntoHrefFor(XconfParser.java:524)

at com.ptc.windchill.structconf.xconf.XconfParser.access$1400(XconfParser.java:41)

at com.ptc.windchill.structconf.xconf.XconfParser$Handler.startElement(XconfParser.java:890)

at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)

at org.apache.xerces.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)