Phonenumber error Joomla 3.4.8 civicrm 4.6.11
If this is not an intermittent problem that has gone away by now, then likely your installation or upgrade has caused some problems. My guess is that you need to check the base_url in your civicrm.settings.php file, or more properly, in the CiviCRM Resource URL field under Administer > System Settings > Resource URLs.