Fix is on lines 519 and 520. Variable $this->sensor wasn't converted to string so caused REQUEST_DENIED on direct call of the get_lat_long_from_address() function.

Googlemaps.php

function get_lat_long_from_address($address)
	{
		$lat = 0;
		$lng = 0;

		$sensor_str = ($this->sensor) ? 'true' : 'false';
		$data_location = "http://maps.google.com/maps/api/geocode/json?address=".str_replace(" ", "+", $address)."&sensor=".$sensor_str;
		if ($this->region!="" && strlen($this->region)==2) { $data_location .= "&region=".$this->region; }
		$data = file_get_contents($data_location);
		$data = json_decode($data);
		
		if ($data->status=="OK") {
			$lat = $data->results[0]->geometry->location->lat;
			$lng = $data->results[0]->geometry->location->lng;
			
		}
		
		return array($lat, $lng);
		
	}