Some of you may have come across this error in the JCE Administration Component Control Panel recently. This is nothing to be alarmed about, as it occurs because the new site is not yet offering a news feed which would be displayed as it was before, in the Control Panel.
To remove the Feed module and susequantly the error, go to Extensions->Module Manager and click on the 'Administrator' tab, then find and disable the 'JCE Latest News' module.
UPDATE: An additional fix which restores the feed invloves editing the module and changing the Feed URL to http://www.joomlacontenteditor.net