Generate PDF report with testrunner throws error

Hi

I got a Centos server running that is executing soapui tests. I have the following command working:

testrunner -e [endpoint] -r -a -f/reportDir -R"Project Report" -FPDF /soapui-project.xml

Tests run fine but when it comes to creating the PDF report java throws an error:

at com.eviware.soapui.tools.SoapUITestCaseRunner.throwFailureException(SoapUITestCaseRunner.java:532)
at com.eviware.soapui.tools.SoapUITestCaseRunner.runRunner(SoapUITestCaseRunner.java:433)
at com.eviware.soapui.tools.AbstractSoapUIRunner.run(AbstractSoapUIRunner.java:158)
at com.eviware.soapui.tools.AbstractSoapUIRunner.runFromCommandLine(AbstractSoapUIRunner.java:89)
at com.eviware.soapui.SoapUIProTestCaseRunner.main(SourceFile:58)