If I set up the PRQA plugin on a Jenkins running on my machine (just install the official 1.441 war file and start it via java -jar jenkins.war, everything works fine. Now if I setup my machine to run as a slave and let the job be triggered by the master somewhere else (also version 1.441), I get the following error:

This job will try to create a report with the following selected parameters:
QAR selected project file: Sources\QAC\LibFusion\LibFusion.prj
QAR selected product: QAC
QAR selected report type: Compliance

Beginning report generation with the following command:
qaw QAC "Sources\QAC\xx\yy.prj" -maseq "qar %Q %P+ %L+ -po qar::report_type=Compliance\ Report -po qar::project_name=%J -po qar::output_path=c:_dev\jenkins-int\workspace\xx_QAC -po qar::viewing_program=dummy -po qar::report_format=xhtml"
Viewer "dummy" not available, result will not be rendered.
Generating - Please wait...
Writing c:_dev\jenkins-int\workspace\xx_QAC\Compliance Report.xml Writing c:_dev\jenkins-int\workspace\xx_QAC\Compliance Report.xhtml Writing c:_dev\jenkins-int\workspace\OFRF_LibFusion_QAC\Compliance Report-Main.xhtml Finished remote reporting.
Found report. Attempting to copy Compliance Report.xhtml to artifacts directory: /home/qqmthk1/.jenkins/jobs/xx_QAC/builds/2012-05-11_17-32-05/archive
Attempting to copy report to following target: Compliance Report.xhtml Succesfully copied report
ERROR: Publisher net.praqma.jenkins.plugin.prqa.notifier.PRQANotifier aborted due to exception java.lang.NullPointerException
at net.praqma.jenkins.plugin.prqa.notifier.PRQANotifier.perform(PRQANotifier.java:240)
at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:19)
at hudson.model.AbstractBuild$AbstractRunner.perform(AbstractBuild.java:692)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:667)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildSteps(AbstractBuild.java:645)
at hudson.model.Build$RunnerImpl.post2(Build.java:162)
at hudson.model.AbstractBuild$AbstractRunner.post(AbstractBuild.java:614)
at hudson.model.Run.run(Run.java:1429)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:238)
Notifying upstream projects of job completion
Finished: FAILURE