CaRP : Caching RSS Parser : Error : Failed to open internet connection

CaRP: Caching RSS Parser - Documentation

Internet connection failed

Explanation

CaRP was unable to open an internet connection to download the requested feed. NOTE: The message that is displayed is what PHP reported to CaRP. Sometimes "Success (0)" will be displayed when in fact a connection error has occurred.

Causes and Solutions

There are many possible reasons why your server might not be able to connect to some other server. The cause of the problem may be indicated (or at least alluded to obliquely) in the error message. A few possibilities:

The name of the other server is misspelled: Check the URL of the feed to make sure you've spelled it correctly.
Your web host has a firewall blocking outgoing connections: If so, you'll need to contact them and request that CaRP be allowed to make outgoing connections on port 80 (they'll know what that means).
DNS isn't working properly on your server: If that's the case, your web host will need to fix it.
CaRP needs to go through a proxy server, but you haven't configured it to do so.
CaRP is configured to go through a proxy server, but the proxy server requires authentication credentials and you haven't supplied them.
Your web host disabled the PHP function "fsockopen": Try running the installation script (carpsetup.php) again. Don't delete CaRP first--just make sure you have carpsetup.php and carpsetupinc.php uploaded and try starting it up. If it doesn't tell you that fsockopen is disabled when it checks PHP function support, then that's not the problem.
etc.

How can I turn error reporting off?
How can I stop error messages from linking to this page?