Hello,

I am trying to create an LCDD file for a positron trigger test geometry. This geometry exists in the "iss40" branch on github under "HPS-Proposal2017-Hodoscope-v0-4pt4-fieldmap".

When running, I get this error:

Downloading...file:/C:/cygwin64/home/Kyle/hps-software/hps-java/detector-data/gdml/ecal_vacuum_flange_complete_v1.gdml
Downloading...file:/C:/cygwin64/home/Kyle/hps-software/hps-java/detector-data/gdml/svt_chamber_v2.gdml
Exception in thread "main" org.jdom.input.JDOMParseException: Error on line 2: cvc-id.2: There are multiple occurrences of ID value 'MainScoringVolume_component0_position'.
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:504)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:807)
        at org.lcsim.geometry.compact.converter.lcdd.Main.convert(Main.java:77)
        at org.hps.detector.DetectorConverter.run(DetectorConverter.java:118)
        at org.hps.detector.DetectorConverter.main(DetectorConverter.java:53)
Caused by: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 165441; cvc-id.2: There are multiple occurrences of ID value 'MainScoringVolume_component0_position'.
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processOneAttribute(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processAttributes(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:489)
        ... 4 more
Caused by: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 165441; cvc-id.2: There are multiple occurrences of ID value 'MainScoringVolume_component0_position'.
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processOneAttribute(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processAttributes(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.emptyElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:489)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:807)
        at org.lcsim.geometry.compact.converter.lcdd.Main.convert(Main.java:77)
        at org.hps.detector.DetectorConverter.run(DetectorConverter.java:118)
        at org.hps.detector.DetectorConverter.main(DetectorConverter.java:53)

I'm assuming that the error comes from the "svt_chamber_v2.gdml" file. Could anyone advise me on how to correct this? (Note that I only changed the compact.xml file - none of the associated geometry files. My compact.xml also does not contain the variable "MainScoringVolume_component0_position".)

Thanks,

Kyle