After upgrading from xunit plugin 1.54 to 1.55 I get a NullPointerException processing PHPUnit.

Downgrading to 1.54 resolved the problem.

[xUnit] [INFO] - Starting to record.
[xUnit] [INFO] - Processing PHPUnit-3.x (default)
ERROR: Publisher org.jenkinsci.plugins.xunit.XUnitPublisher aborted due to exception
java.lang.NullPointerException
at com.thalesgroup.dtkit.metrics.hudson.api.type.MetricsType.isSkipNoTestFiles(MetricsType.java:80)
at org.jenkinsci.plugins.xunit.XUnitPublisher.getXUnitToolInfoObject(XUnitPublisher.java:191)
at org.jenkinsci.plugins.xunit.XUnitPublisher.performTests(XUnitPublisher.java:169)
at org.jenkinsci.plugins.xunit.XUnitPublisher.performXUnit(XUnitPublisher.java:116)
at org.jenkinsci.plugins.xunit.XUnitPublisher.perform(XUnitPublisher.java:93)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:804)
at hudson.model.AbstractBuild$AbstractBuildExecution.performAllBuildSteps(AbstractBuild.java:776)
at hudson.model.Build$BuildExecution.post2(Build.java:183)
at hudson.model.AbstractBuild$AbstractBuildExecution.post(AbstractBuild.java:726)
at hudson.model.Run.execute(Run.java:1600)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:241)
Finished: FAILURE