JRI problem

Hi,

I installed JRI in my 64bit linux.

And when i run the test case in JRI, it turns out such Exception:

JNI_GetCreatedJavaVMs said there's no JVM running!
Exception in thread "Thread-1" java.lang.NullPointerException
   at org.rosuda.JRI.Rengine.setupR(Rengine.java:131)
   at org.rosuda.JRI.Rengine.run(Rengine.java:532)

How can I solve it?

my jdk version is 1.6.

Thanks a lot!

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Best regards