Title: error message
Last modified: August 24, 2016

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# error message

 *  [Andrea](https://wordpress.org/support/users/andreafreddi/)
 * (@andreafreddi)
 * [11 years ago](https://wordpress.org/support/topic/error-message-425/)
 * hi
    i’ve installed your cool plugin and want to say thx for the great job you
   did. when i load my page with the plugin, the alphabetical row (show letter #
   a b … y z) shows, but by clicking on a letter, the following error message appears:
 * Warning: call_user_func_array() expects parameter 1 to be a valid callback, first
   array member is not a valid class name or object in ../freddi.ch/wp-includes/
   plugin.php on line 496
 * what am i doing wrong? is there a way to fix this?
 * thx in advance for your help
    andrea
 * [https://wordpress.org/plugins/tune-library/](https://wordpress.org/plugins/tune-library/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [Yannick Lefebvre](https://wordpress.org/support/users/jackdewey/)
 * (@jackdewey)
 * [10 years, 11 months ago](https://wordpress.org/support/topic/error-message-425/#post-6175541)
 * I just corrected the issue in version 1.5.6. Please update and confirm that it
   works on your site now. Sorry for the long reply time.

Viewing 1 replies (of 1 total)

The topic ‘error message’ is closed to new replies.

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## Tags

 * [call_user_func_array](https://wordpress.org/support/topic-tag/call_user_func_array/)

 * 1 reply
 * 2 participants
 * Last reply from: [Yannick Lefebvre](https://wordpress.org/support/users/jackdewey/)
 * Last activity: [10 years, 11 months ago](https://wordpress.org/support/topic/error-message-425/#post-6175541)
 * Status: not resolved