[ibr-dtn] Android DTN Ping

Good day,

I've installed the DTN Example App (DTN Ping) on my mobile, however, every time I click on the ping button it shows "DTN Ping has stopped working". I have tried on 2 mobiles already and both showed the same mistake. Has anyone ever had this kind of problem? If so, is there anyway to make it work?

Thanks in advance, Guilherme