Title: [Plugin: Flexible Upload V1.13]‘media_admin_css’error for WordPress V2.6.5
Last modified: August 19, 2016

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# [Plugin: Flexible Upload V1.13]‘media_admin_css’error for WordPress V2.6.5

 *  Resolved [dgdltd911](https://wordpress.org/support/users/dgdltd911/)
 * (@dgdltd911)
 * [17 years, 6 months ago](https://wordpress.org/support/topic/plugin-flexible-upload-error-for-wordpress-v265/)
 * But, after activated, when uploading images, it shows error as following,
 *  Warning: call_user_func_array() [function.call-user-func-array]: First argument
   is expected to be a valid callback, ‘media_admin_css’ was given in /www/users/……./
   wp-includes/plugin.php on line 311
 * To solve the error, please refer: [http://wordpress.org/support/topic/186579](http://wordpress.org/support/topic/186579),
   and look at alexrabe’s reply,
 * what should be done is to modify “flexible-upload-wp25.php” and find following
   content,
 *  function fup_set_actions() {
    remove_action(’media_upload_image’, ‘media_upload_image’);
   add_action(’media_upload_image’, ‘fup_media_upload_image’); add_action(’admin_head_fup_media_upload_form’,‘
   media_admin_css’); remove_filter(’media_send_to_editor’, ‘image_media_send_to_editor’);
   add_filter(’media_send_to_editor’, ‘fup_media_send_to_editor’, 10, 3); }
 * and add red font part
 *  function fup_set_actions() {
    remove_action(’media_upload_image’, ‘media_upload_image’);
   add_action(’media_upload_image’, ‘fup_media_upload_image’); // not longer needed
   for wp2.6 if ( !function_exists(’wp_enqueue_style’) ) add_action(’admin_head_fup_media_upload_form’,‘
   media_admin_css’); remove_filter(’media_send_to_editor’, ‘image_media_send_to_editor’);
   add_filter(’media_send_to_editor’, ‘fup_media_send_to_editor’, 10, 3); }
 * Refer: [http://www.laotudou.com/wordpress-flexible-upload/](http://www.laotudou.com/wordpress-flexible-upload/)
 * [http://wordpress.org/extend/plugins/flexible-upload/](http://wordpress.org/extend/plugins/flexible-upload/)

The topic ‘[Plugin: Flexible Upload V1.13]‘media_admin_css’error for WordPress V2.6.5’
is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 0 replies
 * 1 participant
 * Last reply from: [dgdltd911](https://wordpress.org/support/users/dgdltd911/)
 * Last activity: [17 years, 6 months ago](https://wordpress.org/support/topic/plugin-flexible-upload-error-for-wordpress-v265/)
 * Status: resolved

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