[BUG-5699] Ignition 8.1.15 will not load our Vision Projects

Ignition
,
1

Our vision clients are failing to load after the Igntition 8.1.15 upgrade. Here is the error we are receiving. Any ideas?

com.inductiveautomation.ignition.common.xmlserialization.SerializationException: Error deserializing element "</o>"
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.XMLDeserializer$ParseContext.createException(XMLDeserializer.java:996)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.XMLDeserializer$ParseContext.createException(XMLDeserializer.java:957)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.XMLDeserializer$ParseContext.onElementEnd(XMLDeserializer.java:934)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:165)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:157)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:157)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:157)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:157)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:157)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:157)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:157)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.readElement(BinaryParser.java:157)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.BinaryParser.parse(BinaryParser.java:51)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.XMLDeserializer.deserializeBinary(XMLDeserializer.java:358)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.XMLDeserializer.deserialize(XMLDeserializer.java:268)
	at com.inductiveautomation.ignition.common.xmlserialization.deserialization.XMLDeserializer.deserialize(XMLDeserializer.java:248)
	at com.inductiveautomation.factorypmi.application.FPMIApp.decodeProjectResource(FPMIApp.java:440)
	at com.inductiveautomation.factorypmi.application.FPMIApp.createApp(FPMIApp.java:280)
	at com.inductiveautomation.factorypmi.application.runtime.ClientPanel.startupApp(ClientPanel.java:838)
	at com.inductiveautomation.factorypmi.application.runtime.ClientPanel.onProjectDownloadFinished(ClientPanel.java:810)
	at com.inductiveautomation.factorypmi.application.runtime.DownloadProjectPane.lambda$new$0(DownloadProjectPane.java:72)
	at java.base/java.util.concurrent.CompletableFuture.uniWhenComplete(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture$UniWhenComplete.tryFire(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture.postComplete(Unknown Source)
	at java.base/java.util.concurrent.CompletableFuture.complete(Unknown Source)
	at com.inductiveautomation.factorypmi.application.runtime.DownloadProjectPane$DownloadProject.run(DownloadProjectPane.java:111)
	at com.inductiveautomation.ignition.client.launch.AbstractStepRunner.run(AbstractStepRunner.java:33)
	at java.base/java.lang.Thread.run(Unknown Source)
2

Unfortunately, there was a regression related to dataset client tags that are stored as PyDataSet values (instead of standard Dataset) that exhibit this error. If you remove/adjust the offending client tag[s] prior to import, it should load. Additionally, this is fixed as of 8.1.16 (the release candidate is now available here: https://inductiveautomation.com/downloads/ignition/8.1.16-rc1).