Since switching my DNS…

Since my DNS has been switched about 2 hours now, when I try to update a feed source I recieve the following error/warning message:

” Warning: ./cache is not writeable. Make sure you’ve set the correct relative or absolute path, and that the location is server-writable. in /home2/jeisler911/public_html/wp-includes/class-simplepie.php on line 1404″