unfortunately,com.sinch.apptoappcall has stopped Android application (VoIp) [duplicate]

This question is an exact duplicate of:

• unfortunately,com.sinch.apptoappcall has stopped Android 1 answer

I uploaded the program here http://ift.tt/1uvqvxI

I take the project from this site: http://ift.tt/1t3UOpQ

i edit the key and secert

I'm using Eclipse on Windows 7.

What is causing my error and how can I fix it?