this is a fun application, and i'd like to get it fully working on my machine

so far this is what i get:

~ $ callerid +1802xxxxxxx
I/O Warning : Failed to load external entity "/opt/callerid/s_ca.xml"
13:36:20: Caller location Montpelier, VT

using the program via the daemon outputs only montpelier, vt too, without any error message.

can someone give me some advice on what i have failed to do? by the way, if it matters, i only use wifi to access the web.
thanks for the help