Importing Tags java.lang.ClassNotFoundException: boolean

Hi,

I have exported tags from a project on our dev server and tried to import it into a project on my local
machine, and the import fails with the following error message. Has anyone come across such issues before?

org.xml.sax.SAXException: boolean
java.lang.ClassNotFoundException: boolean
at com.inductiveautomation.ignition.common.xmlserialization.simple.SimpleXMLReader.startElement(SimpleXMLReader.java:197)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown Source)
at com.inductiveautomation.ignition.common.xmlserialization.simple.SimpleXMLReader.parseStream(SimpleXMLReader.java:101)
at com.inductiveautomation.ignition.common.xmlserialization.simple.SimpleXMLReader.parseFile(SimpleXMLReader.java:65)
at com.inductiveautomation.ignition.common.sqltags.importexport.TagXMLImporter.runImport(TagXMLImporter.java:83)
at com.inductiveautomation.ignition.designer.sqltags.action.ImportTagAction$TagImportTask.run(ImportTagAction.java:135)
at com.inductiveautomation.ignition.client.util.gui.progress.ClientProgressManager$ClientRunningTask.run(ClientProgressManager.java:495)
at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$ThrowableCatchingRunnable.run(BasicExecutionEngine.java:518)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown Source)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: boolean
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.inductiveautomation.ignition.common.sqltags.importexport.DatasetElement$ColumnElement.setAttributes(DatasetElement.java:127)
at com.inductiveautomation.ignition.common.xmlserialization.simple.SimpleXMLReader.startElement(SimpleXMLReader.java:190)
… 25 more

Ignition v7.9.10 (b2018112821)
Java: Oracle Corporation 1.8.0_221

This sounds like what can happen when going backwards in Ignition versions. That is not (cannot be) supported.