I migrated at the weekend from 4.6.22 to 4.7.19 and all went smoothly. But now users get the following problem when updating a contact's address. They get 'Unable to reach network' but looking in ConfigandLog I see this line prior to the fatal error: /home/rsvpadmi/public_html/sites/all/modules/civicrm/CRM/Utils/Geocode/Google.php(87): CRM_Core_DAO::getFieldValue("CRM_Core_DAO_StateProvince", "null")
I 'fixed' the problem by switching off Google maps in 'Mapping and Geocoding'. In fact, maps were being displayed OK but users just couldn't update an address. Anyone have any clues as to what the problem is?