I did not have anything in the error log either. For me it was an SSL problem.
Make sure you have the Google API key in the TastyIgniter settings.
If you are in Windows running a WAMP server. Enable CURL:
https://stackoverflow.com/questions/13021536/how-to-enable-curl-in-wamp-server
While debugging, if on Line 770 [$geocode_data = curl_exec($ch)] on C:\wamp\www\tastyigniter\system\tastyigniter\libraries\Location.php, it returns false. Then you can use curl_error($ch) to see the error.
https://stackoverflow.com/questions/8227909/curl-exec-always-returns-false
For me the error was: "SSL certificate problem: unable to get local issuer certificate". Solved with this:
https://stackoverflow.com/questions/24611640/curl-60-ssl-certificate-unable-to-get-local-issuer-certificate
https://stackoverflow.com/questions/28858351/php-ssl-certificate-error-unable-to-get-local-issuer-certificate
