java.lang.NullPointerException
        at org.netbeans.modules.python.debugger.utils.ProcessLauncher.waitForCompletion(ProcessLauncher.java:97)
        at org.netbeans.modules.python.debugger.backend.PythonInterpretor.doTheJob(PythonInterpretor.java:129)
        at org.netbeans.modules.python.debugger.backend.PythonInterpretor.run(PythonInterpretor.java:139)