I am also getting the same error..
here is the full details
Ping Test
Trying to ping: https://search.yahooapis.com/SiteExplorerService/V1/updateNotification?appid=egfY45fV34GgqvxlfP0Q8JKPxqnMgsTdQ0kTgs9lmO6Q760mucv9MLu8VHj9Gq5Cs4CI3Qa€”&url=http%3A%2F%2Fwww.walkwithworld.com%2Fsitemap.xml.gz. The sections below should give you an idea whats going on.
Errors, Warnings, Notices:
WP_DEBUG was set to false somewhere before. You might not see all debug information until you remove this declaration!
Result (text only):
The following errors were detected: backend fetch error 400
Result (HTML):
<?xml version="1.0" encoding="UTF-8"?> <Error xmlns="urn:yahoo:api"> The following errors were detected: <Message>backend fetch error 400</Message> </Error> <!-- ws03.ydn.gq1.yahoo.com uncompressed Mon Aug 16 22:44:37 PDT 2010 -->
anybody please help…