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

**URL:** <https://forum.inductiveautomation.com/t/bug-5699-ignition-8-1-15-will-not-load-our-vision-projects/57542>\
**Category:** Ignition\
**Tags:** ignition81, vision\
**Created:** [March 23, 2022, 3:31pm UTC](https://forum.inductiveautomation.com/t/bug-5699-ignition-8-1-15-will-not-load-our-vision-projects/57542 "2022-03-23T15:31:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jtdfan](https://avatars.discourse-cdn.com/v4/letter/j/a88e4f/32.png) [@jtdfan](https://forum.inductiveautomation.com/u/jtdfan)\
**Post date:** [March 23, 2022, 3:31pm UTC](https://forum.inductiveautomation.com/t/bug-5699-ignition-8-1-15-will-not-load-our-vision-projects/57542/1 "2022-03-23T15:31:10Z")

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

```auto
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)

```

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<div class="post-metadata">

**Author:** ![kcollins](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kcollins/32/19646_2.png) [@kcollins](https://forum.inductiveautomation.com/u/kcollins)\
**Post date:** [March 23, 2022, 3:42pm UTC](https://forum.inductiveautomation.com/t/bug-5699-ignition-8-1-15-will-not-load-our-vision-projects/57542/2 "2022-03-23T15:42:44Z")

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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](https://inductiveautomation.com/downloads/ignition/8.1.16-rc1)).