Title: [Plugin: NextGEN Gallery] Warning: call_user_func_array() … /plugin.php on line 311 Last modified: August 19, 2016 --- # [Plugin: NextGEN Gallery] Warning: call_user_func_array() … /plugin.php on line 311 * [s0what](https://wordpress.org/support/users/s0what/) * (@s0what) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/) * 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 /webhotels/ domains/www.susts.lv/www/wp-includes/plugin.php on line 311 * This probably is because of broken file, but I can’t find the broken one. Viewing 15 replies - 1 through 15 (of 15 total) * [bee-dudler](https://wordpress.org/support/users/bee-dudler/) * (@bee-dudler) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801162) * Hi, your wordpress is 2.62 ? a beta i guess. Maybe that’s where the problem is coming from. In gallery/admin/25/media-upload.php in line 53 you will find` add_action('admin_head_media_upload_nextgen_form', 'media_admin_css');` but this file is only called in nggallery.php `if (IS_WP25)` this you can find four times in that file. which means in short that nggallery is not prepared for wp betas. You may try to change all four to `if (IS_WP26)` and see what happens. * best regards bee * Thread Starter [s0what](https://wordpress.org/support/users/s0what/) * (@s0what) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801215) * I changed to (IS_WP26), but nothing new happens, I still got the same warning. * [bee-dudler](https://wordpress.org/support/users/bee-dudler/) * (@bee-dudler) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801219) * Hi, `define('IS_WP25', version_compare($wp_version, '2.4', '>=') );` line 56 was overseen yesterday by me maybe you add a line which is according to 2.6. * best regards bee * Thread Starter [s0what](https://wordpress.org/support/users/s0what/) * (@s0what) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801220) * Hello! 🙂 * you mean that it should look like that: * define(‘IS_WP25’, version_compare($wp_version, ‘2.6’, ‘>=’) ); ? Whith that I got the same error. * If I make it like that: * define(‘IS_WP26’, version_compare($wp_version, ‘2.6’, ‘>=’) ); then plugin doesn’t work at all. * define(‘IS_WP26’, version_compare($wp_version, ‘2.4’, ‘>=’) ); doesn’t work also. * [bee-dudler](https://wordpress.org/support/users/bee-dudler/) * (@bee-dudler) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801222) * Hi, last try ok? `define('IS_WP26', version_compare($wp_version, '2.5', '>='));` would be in the logic i guess * best regards bee * Thread Starter [s0what](https://wordpress.org/support/users/s0what/) * (@s0what) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801223) * 🙁 define(‘IS_WP26’, version_compare($wp_version, ‘2.5’, ‘>=’) ); * not working. * Thread Starter [s0what](https://wordpress.org/support/users/s0what/) * (@s0what) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801224) * I installed WP 2.6Beta3 on other server and gallery works fine on it, so this probably is not a version problem.. 🙁 * [bee-dudler](https://wordpress.org/support/users/bee-dudler/) * (@bee-dudler) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801225) * Then maybe a beta 2.62 problem. best regards bee * [Alex Rabe](https://wordpress.org/support/users/alexrabe/) * (@alexrabe) * [17 years, 11 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801227) * NextGEN will support WP 2.6 after the first RC. * Required changes : * ``` // not longer needed for wp2.6 if ( !function_exists('wp_enqueue_style') ) add_action('admin_head_media_upload_nextgen_form', 'media_admin_css'); ``` * [http://code.google.com/p/nextgen-gallery/source/diff?r=225&format=side&path=/trunk/admin/media-upload.php](http://code.google.com/p/nextgen-gallery/source/diff?r=225&format=side&path=/trunk/admin/media-upload.php) * [xxxevilgrinxxx](https://wordpress.org/support/users/xxxevilgrinxxx/) * (@xxxevilgrinxxx) * [17 years, 10 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801306) * I’ve had that issue with the Flexible Upload plug in as well. Disabling the plugin worked nicely 🙂 * [phillycp](https://wordpress.org/support/users/phillycp/) * (@phillycp) * [17 years, 10 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801320) * After commenting out the line alexrabe shows, call the media.css file from fup_admin_header at the top of the file like so: * ``` function fup_admin_header() { global $fup_rel_dir; wp_enqueue_script('fup_swfupload', '/'.$fup_rel_dir.'flexible-upload-wp25js.php', array('prototype'), false); echo ''. "\n"; } ``` * [comprido](https://wordpress.org/support/users/comprido/) * (@comprido) * [17 years, 10 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801322) * That´s it xxxevilgrinxxx, same problem with the “Add Media” button. * “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 /home/…/wp- includes/plugin.php on line 311” * If you deactivate the flexible upload plugin the problem is solve. * [asgard](https://wordpress.org/support/users/asgard/) * (@asgard) * [17 years, 10 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801330) * I am having this same problem. Disabling Flexible Upload gets rid of it but now when I click on images I have added to a post, it stops showing as a pop up thick box, but just opens as an image. * I basically have to set the images up in a NextGEN gallery to be able to get that effect. * [alnmedia](https://wordpress.org/support/users/alnmedia/) * (@alnmedia) * [17 years, 4 months ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801398) * I got this same error today. Everything was working fine earlier. Now I get the error. * After trying to deactivate the plugin i get this error. * Warning: Cannot modify header information – headers already sent by (output started at /home/content/a/l/n/alnmedia/html/blog/wp-config.php:29) in /home/content/ a/l/n/alnmedia/html/blog/wp-includes/pluggable.php on line 770 * [visualadventures](https://wordpress.org/support/users/visualadventures/) * (@visualadventures) * [17 years, 1 month ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801422) * past this into the bottom of the includes/plugin.php file if( ! function_exists(‘ media_admin_css’) ){ function media_admin_css(){ wp_admin_css(‘css/media’); }} * should go just above the end php tag (?>) Viewing 15 replies - 1 through 15 (of 15 total) The topic ‘[Plugin: NextGEN Gallery] Warning: call_user_func_array() … /plugin.php on line 311’ is closed to new replies. * 15 replies * 9 participants * Last reply from: [visualadventures](https://wordpress.org/support/users/visualadventures/) * Last activity: [17 years, 1 month ago](https://wordpress.org/support/topic/plugin-nextgen-gallery-warning-call_user_func_array-pluginphp-on-line-311/#post-801422) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics