Parameterised Trigger Plugin succeeds, then reports failure for workflow jobs.

Created a job to launch a Jenkins workflow plugin with parameters.

The parameters are as follows:

module=aop-table
branch=master
DEBUG=false

The resulting output is:

Started by user Finn, Tony
[EnvInject] - Loading node environment variables.
Building on master in workspace /var/lib/jenkins/workspace/Template for AOPUI Components Pipeline
ERROR: Build step failed with exception
java.lang.ClassCastException: org.jenkinsci.plugins.workflow.job.WorkflowJob cannot be cast to hudson.model.AbstractProject
at hudson.plugins.parameterizedtrigger.TriggerBuilder.getProjectListAsString(TriggerBuilder.java:163)
at hudson.plugins.parameterizedtrigger.TriggerBuilder.perform(TriggerBuilder.java:121)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779)
at hudson.model.Build$BuildExecution.build(Build.java:205)
at hudson.model.Build$BuildExecution.doRun(Build.java:162)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:537)
at hudson.model.Run.execute(Run.java:1741)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:98)
at hudson.model.Executor.run(Executor.java:381)
Build step 'Trigger/call builds on other projects' marked build as failure
Finished: FAILURE

However, the child job is actually launched and succeeds.