Could not load validator class


We recently upgraded to 5.1.4 of Jira.

We are seeing a problem where we get a Could not load validator class when trying to

change a workflow state, or re-open a request.

I looked in the logs and I did see this:

2012-09-17 12:20:22,030 http-8080-1 ERROR gpsadmin 740x536x1 b9x4u0 /secure/CommentAssignIssue.jspa atlassian.jira.workflow.OSWorkflowManager Caught exception while attempting to perform action 171 from workflow 26206 on issue 'ECOM-8015'

com.opensymphony.workflow.WorkflowException: Could not load validator class

But I'm not sure where to go now. I did update all of the plugins that the update manager

advised were not compatible, with one exception:

JIRA iCalendar Plugin v 1.0.9 does not seem to appear in the Marketplace and we couldn't upgrade it.

1 answer

This widget could not be displayed.

Hi Ed,

It sounds a known symptom.

You would check check out those KBs (KB1, KB2) in order to fix it.

Kind Regards

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