Title: Header problems
Last modified: August 19, 2016

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# Header problems

 *  [ipod](https://wordpress.org/support/users/ipod/)
 * (@ipod)
 * [17 years, 3 months ago](https://wordpress.org/support/topic/header-problems-2/)
 * Hello,
 * I have a problem since I upgraded to WP 2.7.1 and that is this warning on the
   very top of my frontpage.
 * Warning: call_user_func_array() [function.call-user-func-array]: First argument
   is expected to be a valid callback, ‘addHeaderCode’ was given in /public_html/
   wp-includes/plugin.php on line 339
 * And I dont know where to start or end my search for the problem…
 * [http://kulturspegeln.se](http://kulturspegeln.se)
 * Please help if you can 😉

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [kmessinger](https://wordpress.org/support/users/kmessinger/)
 * (@kmessinger)
 * [17 years, 3 months ago](https://wordpress.org/support/topic/header-problems-2/#post-1003273)
 * This script in your header file is the culprit.
    `<b>Warning</b>: call_user_func_array()[
   <a href='function.call-user-func-array'>function.call-user-func-array</a>]: First
   argument is expected to be a valid callback, 'addHeaderCode' was given in <b>/
   home2/kultursp/public_html/wp-includes/plugin.php</b> on line <b>339</b><br /
   >`
 *  [shane-g](https://wordpress.org/support/users/shane-g/)
 * (@shane-g)
 * [17 years, 3 months ago](https://wordpress.org/support/topic/header-problems-2/#post-1003274)
 * Hi,
 * It seems that this is an error due to some plugins.kindly check with your installed
   plugins and remove all unwanted plugins from the blog.
 * Thanks,
 * Shane G.
 *  [semper tiro](https://wordpress.org/support/users/semper-tiro/)
 * (@semper-tiro)
 * [17 years, 2 months ago](https://wordpress.org/support/topic/header-problems-2/#post-1003683)
 * For me, it was
 * WordPress PHP Info
 * that caused the problem.
 *  [RobinInTexas](https://wordpress.org/support/users/robinintexas/)
 * (@robinintexas)
 * [17 years, 2 months ago](https://wordpress.org/support/topic/header-problems-2/#post-1003689)
 * Deactivating PHP Info fixed my problem as well.
 * Thanks Semper.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Header problems’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 4 replies
 * 5 participants
 * Last reply from: [RobinInTexas](https://wordpress.org/support/users/robinintexas/)
 * Last activity: [17 years, 2 months ago](https://wordpress.org/support/topic/header-problems-2/#post-1003689)
 * Status: not resolved

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