Cannot save contact on demo site, error about phone_ext not in fields list

As of build: 34786

http://drupal.demo.civicrm.org/civicrm/contact/add?reset=1&action=update&cid=5&context=search

Cannot save contact. Error is: "phone_ext" not in fields list.

----------------

Dr. James Smith Jr.
Sorry. A non-recoverable error has occurred.
DB Error: no such field
Error Details
Database Error Code: Unknown column 'phone_ext' in 'field list', 1054
Additional Details:

Array
(
[callback] => Array
(
[0] => CRM_Core_Error
[1] => handle
)

[code] => -19
[message] => DB Error: no such field
[mode] => 16
[debug_info] => UPDATE civicrm_phone SET contact_id = 5 , location_type_id = 1 , is_primary = 1 , is_billing = 0 , phone = '81619114' , phone_ext = NULL , phone_type_id = 1 WHERE ( civicrm_phone.id = 104 ) [nativecode=1054 ** Unknown column 'phone_ext' in 'field list']
[type] => DB_Error
[user_info] => UPDATE civicrm_phone SET contact_id = 5 , location_type_id = 1 , is_primary = 1 , is_billing = 0 , phone = '81619114' , phone_ext = NULL , phone_type_id = 1 WHERE ( civicrm_phone.id = 104 ) [nativecode=1054 ** Unknown column 'phone_ext' in 'field list']
[to_string] => [db_error: message="DB Error: no such field" code=-19 mode=callback callback=CRM_Core_Error::handle prefix="" info="UPDATE civicrm_phone SET contact_id = 5 , location_type_id = 1 , is_primary = 1 , is_billing = 0 , phone = '81619114' , phone_ext = NULL , phone_type_id = 1 WHERE ( civicrm_phone.id = 104 ) [nativecode=1054 ** Unknown column 'phone_ext' in 'field list']"]
)