Crashing on launch

Hi there, I have followed the instructions and added the PhoneFormats.dat file, but the sample project throws an exception and crashes on launch for me on line 1078 of RMPhoneFormat.m, in the parseDataHandler method:

```
    [_countryCallingCode setObject:callingCode forKey:country];
```

Reason is "setObjectForKey: key can not be nil"

Any advice? Thanks!
