Title: Errors upon enabling
Last modified: January 16, 2017

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# Errors upon enabling

 *  [sergeantash](https://wordpress.org/support/users/sergeantash/)
 * (@sergeantash)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/errors-upon-enabling/)
 * I just tried this plugin but unfortunately get the following error in my webpage
   headers after enabling…
 * Warning: call_user_func_array() expects parameter 1 to be a valid callback, function‘
   cc_tabby_css’ not found or invalid function name in /home/WEBSITE/DOMAIN.co/wp-
   includes/class-wp-hook.php on line 298
    -  This topic was modified 9 years, 4 months ago by [sergeantash](https://wordpress.org/support/users/sergeantash/).

Viewing 1 replies (of 1 total)

 *  Moderator [cubecolour](https://wordpress.org/support/users/numeeja/)
 * (@numeeja)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/errors-upon-enabling/#post-8659506)
 * The function ‘cc_tabby_css’ suggests that this issue is somehow related to the
   tabby responsive tabs plugin, however I have not seen this error before.
 * Is tabby responsive tabs active on your site? Has any reference to the ‘cc_tabby_css’
   function been added to the theme’s functions.php or any other file such as a 
   custom plugin on the site to override the default stylesheet?
    -  This reply was modified 9 years, 4 months ago by [cubecolour](https://wordpress.org/support/users/numeeja/).
    -  This reply was modified 9 years, 4 months ago by [cubecolour](https://wordpress.org/support/users/numeeja/).

Viewing 1 replies (of 1 total)

The topic ‘Errors upon enabling’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [cubecolour](https://wordpress.org/support/users/numeeja/)
 * Last activity: [9 years, 4 months ago](https://wordpress.org/support/topic/errors-upon-enabling/#post-8659506)
 * Status: not resolved