Python example codes problem

[mamech]

Hello

I have tried the receiver and transmitter examples in python, and strangely, I got an error:
"Exception in thread "Thread-14" java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.LinkedList.checkElementIndex(LinkedList.java:555)
at java.util.LinkedList.get(LinkedList.java:476)
at senscript.SenScript.getCurrent(SenScript.java:138)
at simulation.WisenSimulation.start_simulation(WisenSimulation.java:252)
at simulation.WisenSimulation.simulate(WisenSimulation.java:74)
at simulation.WisenSimulation.run(WisenSimulation.java:479)
at java.lang.Thread.run(Thread.java:748)"

Does running python codes needs installation of anything from my side?