Title: Issue with functions.php & loading plugin Last modified: August 20, 2016 --- # Issue with functions.php & loading plugin * [sturtos](https://wordpress.org/support/users/sturtos/) * (@sturtos) * [13 years, 4 months ago](https://wordpress.org/support/topic/issue-with-functionsphp-loading-plugin/) * I’m having problems with this plugin. When I go to the site, all I see is the following: * Warning: include_once(option-tree/ot-loader.php) [function.include-once]: failed to open stream: No such file or directory in /home/content/45/9926145/html/tarabell/ wp-content/themes/mono/functions.php on line 89 * Warning: include_once() [function.include]: Failed opening ‘option-tree/ot-loader. php’ for inclusion (include_path=’.:/usr/local/php5_3/lib/php’) in /home/content/ 45/9926145/html/tarabell/wp-content/themes/mono/functions.php on line 89 * Warning: Cannot modify header information – headers already sent by (output started at /home/content/45/9926145/html/tarabell/wp-content/themes/mono/functions.php: 89) in /home/content/45/9926145/html/tarabell/wp-includes/pluggable.php on line 881 * My site is now broken. Could you please tell me what I need to do to fix this? Thanks! * [http://wordpress.org/extend/plugins/option-tree/](http://wordpress.org/extend/plugins/option-tree/) Viewing 3 replies - 1 through 3 (of 3 total) * [dhaval007](https://wordpress.org/support/users/dhaval007/) * (@dhaval007) * [13 years, 2 months ago](https://wordpress.org/support/topic/issue-with-functionsphp-loading-plugin/#post-3217777) * I have a also same problem please help me… * [htvu](https://wordpress.org/support/users/htvu/) * (@htvu) * [13 years, 2 months ago](https://wordpress.org/support/topic/issue-with-functionsphp-loading-plugin/#post-3217778) * I think you tried to use OT in Theme mode. Make sure you copy OT source to the root of your theme. For the third warning: check your functions.php at line 89. Something are echo/print. Or there are **some space** (blank) between **`? >`** and **`