Title: [Plugin: WP Super Cache] supercache breaking xml-rpc somehow
Last modified: August 19, 2016

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# [Plugin: WP Super Cache] supercache breaking xml-rpc somehow

 *  [narnett](https://wordpress.org/support/users/narnett/)
 * (@narnett)
 * [17 years, 2 months ago](https://wordpress.org/support/topic/plugin-wp-super-cache-supercache-breaking-xml-rpc-somehow/)
 * I upgraded to 0.9.3 yesterday and one of the XML-RPC calls began failing. I’m
   posting via XML-RPC. The actual post call works, but the “publish” call results
   in an error. Digging into the Python XML-RPC library, here’s what I found the
   server was returning:
 *     ```
       <br />
       <b>Warning</b>:  opendir(/home/nickarne/public_html/tweetsnet/wp-content/cache/meta/) [<a href='function.opendir'>function.opendir</a>]: failed to open dir: No such file or directory in <b>/home/nickarne/public_html/tweetsnet/wp-content/plugins/wp-super-cache/wp-cache-phase2.php</b> on line <b>632</b><br />
       <br />
       <b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/nickarne/public_html/tweetsnet/wp-content/plugins/wp-super-cache/wp-cache-phase2.php:632) in <b>/home/nickarne/public_html/tweetsnet/wp-includes/class-IXR.php</b> on line <b>387</b><br />
       <br />
       <b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/nickarne/public_html/tweetsnet/wp-content/plugins/wp-super-cache/wp-cache-phase2.php:632) in <b>/home/nickarne/public_html/tweetsnet/wp-includes/class-IXR.php</b> on line <b>388</b><br />
       <br />
       <b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/nickarne
       ```
   
 * Changing supercache to “half-on” seems to have solved the problem.
 * It appears to me that the Python library was unable to parse that error message…
   it throws “ParseError: junk after document element: line 2, column 0”. I’m not
   sure what’s going on here… is supercache not playing well with XML-RPC?

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Donncha O Caoimh (a11n)](https://wordpress.org/support/users/donncha/)
 * (@donncha)
 * [17 years, 2 months ago](https://wordpress.org/support/topic/plugin-wp-super-cache-supercache-breaking-xml-rpc-somehow/#post-1041730)
 * You should turn off “Display errors in your php.ini and download [this file](http://svn.wp-plugins.org/wp-super-cache/trunk/wp-cache-phase2.php)
   and copy into your plugins/wp-super-cache/ folder. It will overwrite the one 
   already there.
 *  Thread Starter [narnett](https://wordpress.org/support/users/narnett/)
 * (@narnett)
 * [17 years, 2 months ago](https://wordpress.org/support/topic/plugin-wp-super-cache-supercache-breaking-xml-rpc-somehow/#post-1041780)
 * Thanks! Took me a few minutes to figure out that the first thing is not a WordPress
   setting, but I’ve got that done.
 * I’m just curious about the second step. Is that essentially to restore that file
   to its original?
 * Nick

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘[Plugin: WP Super Cache] supercache breaking xml-rpc somehow’ is closed
to new replies.

 * 2 replies
 * 2 participants
 * Last reply from: [narnett](https://wordpress.org/support/users/narnett/)
 * Last activity: [17 years, 2 months ago](https://wordpress.org/support/topic/plugin-wp-super-cache-supercache-breaking-xml-rpc-somehow/#post-1041780)
 * Status: not resolved

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