Title: Option Tree error Last modified: August 21, 2016 --- # Option Tree error * [whizzplank1](https://wordpress.org/support/users/whizzplank1/) * (@whizzplank1) * [12 years, 9 months ago](https://wordpress.org/support/topic/option-tree-error/) * Upgraded to the new WordPress and now I get the following errors….. * Warning: call_user_func_array() expects parameter 1 to be a valid callback, function‘ ot_register_theme_options_page’ not found or invalid function name in /home/revo/ public_html/wp-includes/plugin.php on line 406 * Warning: call_user_func_array() expects parameter 1 to be a valid callback, function‘ ot_register_theme_options_admin_bar_menu’ not found or invalid function name in /home/revo/public_html/wp-includes/plugin.php on line 487 * Can you help? * [http://wordpress.org/plugins/option-tree/](http://wordpress.org/plugins/option-tree/) Viewing 15 replies - 1 through 15 (of 24 total) 1 [2](https://wordpress.org/support/topic/option-tree-error/page/2/?output_format=md) [→](https://wordpress.org/support/topic/option-tree-error/page/2/?output_format=md) * [awokenlust](https://wordpress.org/support/users/awokenlust/) * (@awokenlust) * [12 years, 9 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035377) * exactly same issue with option tree update. * Any solutions/fixes needed. * [falconreid](https://wordpress.org/support/users/falconreid/) * (@falconreid) * [12 years, 9 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035460) * Ditto: Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘ot_register_theme_options_page’ not found or invalid function name in /home/falconre/public_html/wp-includes/plugin.php on line 406 Skip to main content * Warning: call_user_func_array() expects parameter 1 to be a valid callback, function‘ ot_register_theme_options_admin_bar_menu’ not found or invalid function name in /home/falconre/public_html/wp-includes/plugin.php on line 487 * Where can I get a copy of an older version to run until this is corrected? * [falconreid](https://wordpress.org/support/users/falconreid/) * (@falconreid) * [12 years, 9 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035461) * ps, this is also preventing me from uploading photos for some reason. * [thomas.malbaux](https://wordpress.org/support/users/thomasmalbaux/) * (@thomasmalbaux) * [12 years, 9 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035536) * Same issue here. The message appears and I’m not able to upload images or add some in posts. Also, unable to link other articles via the “discovery” link tool. I use a SuperSkeleton theme. * I followed the advice [here](http://wordpress.org/support/topic/optiontree-not-working-after-upgrade) and went back to v2.0.12 of option-tree. * [awokenlust](https://wordpress.org/support/users/awokenlust/) * (@awokenlust) * [12 years, 9 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035552) * **now when I go to my wp-admin page all I get is this on a blank page. ** * “Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘ot_register_theme_options_page’ was given in /home/lukewat1/public_html/wp-includes/plugin.php on line 406 * Warning: Cannot modify header information – headers already sent by (output started at /home/lukewat1/public_html/wp-includes/plugin.php:406) in /home/lukewat1/public_html/ wp-includes/pluggable.php on line 875″ ** how can I log in to go back to an older version of option tree? * [thomas.malbaux](https://wordpress.org/support/users/thomasmalbaux/) * (@thomasmalbaux) * [12 years, 9 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035554) * [@awokenlust](https://wordpress.org/support/users/awokenlust/): If you have an [FTP access](http://codex.wordpress.org/Using_FileZilla) to your website, you can [download the version 2.0.12](http://wordpress.org/plugins/option-tree/developers/)( maybe another would work but I didn’t try), connect via FTP and browse to the/ wp-content/plugins folder. There, delete the option-tree folder and once it is done, add the option-tree one you downloaded. * I think you then should be able to connect. This is what I did, even I didn’t face your “blank page” issue at the time. * Let us know. * [awokenlust](https://wordpress.org/support/users/awokenlust/) * (@awokenlust) * [12 years, 9 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035592) * Thanks Thomas, that worked perfectly (replaced with v2.1 and it worked). * Thanks, * Luke * Plugin Author [Derek Herman](https://wordpress.org/support/users/valendesigns/) * (@valendesigns) * [12 years, 8 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035619) * `ot_register_theme_options_page` is a valid callback and if your version of the plugin is complaining that is doesn’t exist then it’s more than likely the `ot- functions-admin.php` file is not the correct one and somewhere in the upgrade process things went wrong. * [Fredly04](https://wordpress.org/support/users/fredly04/) * (@fredly04) * [12 years, 8 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035620) * I have the same problem after updating. * If i delete option tree in/wp-content/plugins folder will I have to set everything up again? * Derek: is there a fix on the way or should i delete the plugin and install an earlier version? * Thanks * Plugin Author [Derek Herman](https://wordpress.org/support/users/valendesigns/) * (@valendesigns) * [12 years, 8 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035621) * [@fredly04](https://wordpress.org/support/users/fredly04/) What version are you updating to? * [thomas.malbaux](https://wordpress.org/support/users/thomasmalbaux/) * (@thomasmalbaux) * [12 years, 8 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035622) * Apparently, by my side, it was an issue with the theme I use (SuperSkeleton). It was fix with a theme update. * You can get more information in this thread: [http://wordpress.org/support/topic/option-tree-no-longer-visible-in-super-skeleton-theme-admin](http://wordpress.org/support/topic/option-tree-no-longer-visible-in-super-skeleton-theme-admin). * [awokenlust](https://wordpress.org/support/users/awokenlust/) * (@awokenlust) * [12 years, 8 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035623) * successfully updated to V2.1 on Super Skeleton. No more issues so far. * Plugin Author [Derek Herman](https://wordpress.org/support/users/valendesigns/) * (@valendesigns) * [12 years, 8 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035624) * So is everyones issue the same theme? * [sem101](https://wordpress.org/support/users/sem101/) * (@sem101) * [12 years, 8 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035637) * Yup, it **was** the **Super Skelton** theme 🙁 * [sambze](https://wordpress.org/support/users/sambze/) * (@sambze) * [12 years, 7 months ago](https://wordpress.org/support/topic/option-tree-error/#post-4035640) * I have the Reaction Theme and my front page slider stopped working. Viewing 15 replies - 1 through 15 (of 24 total) 1 [2](https://wordpress.org/support/topic/option-tree-error/page/2/?output_format=md) [→](https://wordpress.org/support/topic/option-tree-error/page/2/?output_format=md) The topic ‘Option Tree error’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/option-tree_363534.svg) * [OptionTree](https://wordpress.org/plugins/option-tree/) * [Frequently Asked Questions](https://wordpress.org/plugins/option-tree/#faq) * [Support Threads](https://wordpress.org/support/plugin/option-tree/) * [Active Topics](https://wordpress.org/support/plugin/option-tree/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/option-tree/unresolved/) * [Reviews](https://wordpress.org/support/plugin/option-tree/reviews/) * 24 replies * 11 participants * Last reply from: [falconreid](https://wordpress.org/support/users/falconreid/) * Last activity: [12 years, 4 months ago](https://wordpress.org/support/topic/option-tree-error/page/2/#post-4035656) * Status: not resolved