At first glance, I had the same reaction as Jelena, but I opened the zip files and copied the code to a test program, and I must say I didn't understand, maybe it's a bug and you could post a message to SAP, and I'm now waiting for answers from experts.
Anyway, I agree with Jelena, and your question is worth re-posting with a minimalist code (inside post, not inside zip) so that you touch more people, and it will be easier to understand it. See example posts by Suhas Saha (for instance: http://scn.sap.com/thread/3881351 )