Unable to access any of the functions within Mail?-Collection of common programming errors

On accessing the my Yahoo mail account an error is shown indicating “the page was loaded with errors” and the details of the error is attached. While I have access to view the yahoo mail page I am unable to access any of the functional tabs such as Calendar and Contact nor the menu for Settings and the User Profile. Furthermore, I am unable to open or delete any of the messages in my Inbox nor can I browse any of the other mail folders such as Draft or Sent. The page error indicates Message: ‘JSON’ is undefined Line: 65 Char: 1559 Code: 0

URI: http://mail.yimg.com/zz/combo?nq/launch/common-neo-base_7364.js&nq/launch/common-neo-ie_7364.js&nq/launch/search-neo_7364.js&nq/launch/inbox-listview-new_7364.js&nq/launch/inbox-message-new_7364.js&nq/launch/inbox-minty-fresh_7364.js&nq/launch/inbox-base_7364.js&nq/intl/js/launch/lang_en-US_7364.js&nq/intl/js/launch/conf_us_7364.js

Originally posted 2013-11-09 23:31:18.