Title: Multi-file uploader isn't working. Warning call_user_func_array
Last modified: August 21, 2016

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# Multi-file uploader isn't working. Warning call_user_func_array

 *  Resolved [Amy](https://wordpress.org/support/users/amyn/)
 * (@amyn)
 * [12 years, 6 months ago](https://wordpress.org/support/topic/multi-file-uploader-isnt-working-warning-call_user_func_array/)
 * I was using an older version of WordPress and this issue was occurring so I recently
   updated to 3.8 to see if this would get resolved, but it is still happening.
 * – Multi-file uploader is not displaying the upload dotted box to drop files into,
   it shows only the select files button and when it is clicked nothing happens.
 * – The browser uploader is working fine.
 * – On the Upload New Media page at the very top this PHP Warning is shown:
 * Warning: call_user_func_array() [function.call-user-func-array]: First argument
   is expected to be a valid callback, ‘100000’ was given in /home/progr3ss/public_html/
   wp-includes/plugin.php on line 199
 * – Also, the Maximum upload file size is showing as 0 kb, which is not true, it
   is set at 50MB.
 * What I have tried:
 * – Updated to WordPress 3.8
    – Disabled all plugins
 * Nothing has worked so far. any help is appreciated!

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

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [12 years, 6 months ago](https://wordpress.org/support/topic/multi-file-uploader-isnt-working-warning-call_user_func_array/#post-4418811)
 * Have you tried:
 * – switching to the default theme to rule out any theme-specific problems.
 * – [resetting the plugins folder](http://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F)
   by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause
   problems.
 * – re-uploading all files & folders – **except** the wp-content folder and wp-
   config.php & root .htaccess files – from a **fresh** download of WordPress. Make
   sure that you delete the old copies of files & folder before uploading the new
   ones.
 *  Thread Starter [Amy](https://wordpress.org/support/users/amyn/)
 * (@amyn)
 * [12 years, 6 months ago](https://wordpress.org/support/topic/multi-file-uploader-isnt-working-warning-call_user_func_array/#post-4418838)
 * I should have dug deeper before posting. It was my theme. I had:
 * `<?php add_filter('upload_size_limit', '100000'); ?>`
 * in my functions file and it was causing the issue.
 * Thanks!

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

The topic ‘Multi-file uploader isn't working. Warning call_user_func_array’ is closed
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## Tags

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [Amy](https://wordpress.org/support/users/amyn/)
 * Last activity: [12 years, 6 months ago](https://wordpress.org/support/topic/multi-file-uploader-isnt-working-warning-call_user_func_array/#post-4418838)
 * Status: resolved

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