Title: Fatal error when activating plugin Last modified: August 21, 2016 --- # Fatal error when activating plugin * [jbx](https://wordpress.org/support/users/jbx/) * (@jbx) * [12 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-when-activating-plugin-15/) * When trying to install this plugin I am just getting this error and it fails to activate. Is it still compatible with the latest WordPress? * Fatal error: Cannot redeclare my_mce_buttons_2() in /vhosts//httpdocs/ wp-content/plugins/tinymce-and-tinymce-advanced-professsional-formats-and-styles/ tinymce-advanced-professional-formats-and-styles.php on line 171 * [https://wordpress.org/plugins/tinymce-and-tinymce-advanced-professsional-formats-and-styles/](https://wordpress.org/plugins/tinymce-and-tinymce-advanced-professsional-formats-and-styles/) The topic ‘Fatal error when activating plugin’ is closed to new replies. * ![](https://s.w.org/plugins/geopattern-icon/tinymce-and-tinymce-advanced-professsional- formats-and-styles_c4c5c6.svg) * [TinyMCE and TinyMCE Advanced Professsional Formats and Styles](https://wordpress.org/plugins/tinymce-and-tinymce-advanced-professsional-formats-and-styles/) * [Frequently Asked Questions](https://wordpress.org/plugins/tinymce-and-tinymce-advanced-professsional-formats-and-styles/#faq) * [Support Threads](https://wordpress.org/support/plugin/tinymce-and-tinymce-advanced-professsional-formats-and-styles/) * [Active Topics](https://wordpress.org/support/plugin/tinymce-and-tinymce-advanced-professsional-formats-and-styles/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/tinymce-and-tinymce-advanced-professsional-formats-and-styles/unresolved/) * [Reviews](https://wordpress.org/support/plugin/tinymce-and-tinymce-advanced-professsional-formats-and-styles/reviews/) * 0 replies * 1 participant * Last reply from: [jbx](https://wordpress.org/support/users/jbx/) * Last activity: [12 years, 6 months ago](https://wordpress.org/support/topic/fatal-error-when-activating-plugin-15/) * Status: not resolved