wpsnoop: fix Merlin theme conflicts, errors & issues

When the theme Merlin conflicts or throws a PHP error we hope wpsnoop can help you to fix the issue quickly.


Discover which shortcodes wp-options PHP functions database tables and files are created by Merlin, plus learn which plugins and/or themes could be in conflict with Merlin.


Troubleshooting theme and plugin conflicts is easier when you know what Merlin leaves behind after uninstalling it from a WordPress installation, there is a list down below for your convenience.

Expert advice is recommended if you are not technically proficient with PHP, MySQL etc. View support options for Merlin

Get professional support for Merlin here

When you need professional help with WordPress: get help here


What does Merlin version 1.4.4 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Merlin to perform differently in your installation, previous versions before 1.4.4 may have created a different set of shortcodes, used different function names or could have created entirely different database tables to store settings and operate. This is not an exhaustive list but shows how version 1.4.4 of Merlin behaves when installed and removed on a clean installation of WordPress.

We have not tested individual shortcodes, features or settings of this theme but instead have concentrated on the potential for obvious errors and conflicts which can occur, if you need help with the plugin in your local installation you can get WordPress help and support for Merlin by clicking here.

Our testing covered the free version of this theme there may or may not be a paid version or premium version available for purchase that unlocks additional features and could behave in a slightly or very different manner.

Which new files does Merlin add to WordPress?

This section will populate with a table showing an icon, size and filepath.

Type & Path Size Conflicts
wp-content/themes/merlin/ 1.03MB No known conflicts with other themes or plugins.
wp-content/themes/merlin/404.php 1.14kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/archive.php 1.01kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/comments.php 2.77kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/ 202.13kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/custom-fonts.css 2.45kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/customizer.css 2.06kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/editor-style.css 5.31kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/flexslider.css 8.54kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/genericons/ 159.96kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/genericons/genericons.css 27.60kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/genericons/Genericons.eot 21.85kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/genericons/Genericons.svg 75.18kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/genericons/Genericons.ttf 21.67kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/genericons/Genericons.woff 13.66kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/gutenberg-styles.css 4.98kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/theme-info.css 2.62kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/themezee-related-posts.css 5.21kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/css/themezee-widget-bundle.css 11.01kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/ 269.71kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/hammersmith-one-v8-latin-ext_latin-regular.woff 38.77kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/hammersmith-one-v8-latin-ext_latin-regular.woff2 27.41kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/roboto-v18-latin-ext_latin-700.woff 27.60kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/roboto-v18-latin-ext_latin-700.woff2 21.60kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/roboto-v18-latin-ext_latin-700italic.woff 29.32kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/roboto-v18-latin-ext_latin-700italic.woff2 23.20kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/roboto-v18-latin-ext_latin-italic.woff 29.54kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/roboto-v18-latin-ext_latin-italic.woff2 23.29kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/roboto-v18-latin-ext_latin-regular.woff 27.57kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/fonts/roboto-v18-latin-ext_latin-regular.woff2 21.41kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/footer.php 1.11kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/functions.php 8.87kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/header.php 2.05kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/home.php 1.66kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/images/ 8.55kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/images/default-slider-image.png 8.55kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/ 101.77kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/addons.php 2.51kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/back-compat.php 2.38kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/ 34.39kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/customizer.php 6.70kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/default-options.php 1.56kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/functions/ 5.64kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/functions/callback-functions.php 1.12kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/functions/custom-controls.php 3.13kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/functions/sanitize-functions.php 1.39kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/sections/ 20.49kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/sections/customizer-general.php 2.59kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/sections/customizer-images.php 2.79kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/sections/customizer-post.php 3.86kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/sections/customizer-postmeta.php 4.77kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/sections/customizer-slider.php 5.29kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/customizer/sections/customizer-upgrade.php 1.19kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/extras.php 3.17kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/slider.php 1.98kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/template-tags.php 11.73kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/theme-info.php 5.96kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/widgets/ 39.64kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/widgets/widget-category-posts-boxed.php 13.33kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/widgets/widget-category-posts-columns.php 12.92kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/inc/widgets/widget-category-posts-grid.php 13.40kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/index.php 946.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/ 98.26kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/customizer.js 1.25kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/html5shiv.js 10.09kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/html5shiv.min.js 2.67kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/jquery.flexslider-min.js 21.82kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/jquery.flexslider.js 53.86kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/navigation.js 5.79kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/sidebar.js 2.33kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/js/slider.js 475.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/languages/ 14.50kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/languages/merlin.pot 14.01kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/languages/readme.txt 505.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/page.php 747.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/readme.txt 7.55kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/rtl.css 11.94kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/screenshot.jpg 241.44kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/search.php 1.57kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/searchform.php 527.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/sidebar.php 713.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/single.php 574.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/style.css 62.13kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-fullwidth.php 619.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-magazine.php 1.50kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/ 6.49kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/content-excerpt.php 717.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/content-page.php 511.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/content-search.php 516.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/content-single.php 759.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/content-slider.php 901.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/content.php 721.00B No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/header-bar.php 1.18kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-parts/post-slider.php 1.28kB No known conflicts with other themes or plugins.
wp-content/themes/merlin/template-slider.php 671.00B No known conflicts with other themes or plugins.

Which new shortcodes does Merlin add to WordPress?

Which new database tables are created by the WordPress theme Merlin?

Which new options are added to the wp-options table by Merlin?

Option Name   Known Conflicts
current_theme Potential conflict with 8753 plugins or themes
theme_mods_twentytwentytwo Potential conflict with 8767 plugins or themes
theme_switched Potential conflict with 8753 plugins or themes
theme_mods_merlin The theme_mods_merlin option doesn't have any known conflicts with other themes or plugins.
widget_merlin_category_posts_boxed The widget_merlin_category_posts_boxed option doesn't have any known conflicts with other themes or plugins.
widget_merlin_category_posts_columns The widget_merlin_category_posts_columns option doesn't have any known conflicts with other themes or plugins.
widget_merlin_category_posts_grid The widget_merlin_category_posts_grid option doesn't have any known conflicts with other themes or plugins.

During use Merlin may or may not create more options depending on how the theme is configured and depending on which other themes and plugins are active in your specific hosting environment.

What new PHP functions does Merlin declare when it is active?

Function   Conflicts Common Errors
merlin_add_image_sizes 0 conflicts Fatal error: Cannot redeclare merlin_add_image_sizes()
merlin_block_editor_assets 0 conflicts Fatal error: Cannot redeclare merlin_block_editor_assets()
merlin_body_classes 0 conflicts Fatal error: Cannot redeclare merlin_body_classes()
merlin_category_posts_excerpt_length 0 conflicts Fatal error: Cannot redeclare merlin_category_posts_excerpt_length()
merlin_content_width 0 conflicts Fatal error: Cannot redeclare merlin_content_width()
merlin_control_post_content_callback 0 conflicts Fatal error: Cannot redeclare merlin_control_post_content_callback()
merlin_custom_fonts 0 conflicts Fatal error: Cannot redeclare merlin_custom_fonts()
merlin_customize_partial_blogdescription 0 conflicts Fatal error: Cannot redeclare merlin_customize_partial_blogdescription()
merlin_customize_partial_blogname 0 conflicts Fatal error: Cannot redeclare merlin_customize_partial_blogname()
merlin_customize_preview_css 0 conflicts Fatal error: Cannot redeclare merlin_customize_preview_css()
merlin_customize_preview_js 0 conflicts Fatal error: Cannot redeclare merlin_customize_preview_js()
merlin_customize_register_general_settings 0 conflicts Fatal error: Cannot redeclare merlin_customize_register_general_settings()
merlin_customize_register_options 0 conflicts Fatal error: Cannot redeclare merlin_customize_register_options()
merlin_customize_register_post_image_settings 0 conflicts Fatal error: Cannot redeclare merlin_customize_register_post_image_settings()
merlin_customize_register_post_settings 0 conflicts Fatal error: Cannot redeclare merlin_customize_register_post_settings()
merlin_customize_register_postmeta_settings 0 conflicts Fatal error: Cannot redeclare merlin_customize_register_postmeta_settings()
merlin_customize_register_slider_settings 0 conflicts Fatal error: Cannot redeclare merlin_customize_register_slider_settings()
merlin_customize_register_upgrade_settings 0 conflicts Fatal error: Cannot redeclare merlin_customize_register_upgrade_settings()
merlin_customize_theme_links 0 conflicts Fatal error: Cannot redeclare merlin_customize_theme_links()
merlin_default_menu 0 conflicts Fatal error: Cannot redeclare merlin_default_menu()
merlin_default_options 0 conflicts Fatal error: Cannot redeclare merlin_default_options()
merlin_entry_footer 0 conflicts Fatal error: Cannot redeclare merlin_entry_footer()
merlin_entry_meta 0 conflicts Fatal error: Cannot redeclare merlin_entry_meta()
merlin_entry_meta_slider 0 conflicts Fatal error: Cannot redeclare merlin_entry_meta_slider()
merlin_entry_tags 0 conflicts Fatal error: Cannot redeclare merlin_entry_tags()
merlin_excerpt_length 0 conflicts Fatal error: Cannot redeclare merlin_excerpt_length()
merlin_footer_text 0 conflicts Fatal error: Cannot redeclare merlin_footer_text()
merlin_header_image 0 conflicts Fatal error: Cannot redeclare merlin_header_image()
merlin_hide_elements 0 conflicts Fatal error: Cannot redeclare merlin_hide_elements()
merlin_infinite_scroll_render 0 conflicts Fatal error: Cannot redeclare merlin_infinite_scroll_render()
merlin_meta_author 0 conflicts Fatal error: Cannot redeclare merlin_meta_author()
merlin_meta_date 0 conflicts Fatal error: Cannot redeclare merlin_meta_date()
merlin_more_link 0 conflicts Fatal error: Cannot redeclare merlin_more_link()
merlin_pagination 0 conflicts Fatal error: Cannot redeclare merlin_pagination()
merlin_post_image_archives 0 conflicts Fatal error: Cannot redeclare merlin_post_image_archives()
merlin_post_image_single 0 conflicts Fatal error: Cannot redeclare merlin_post_image_single()
merlin_post_navigation 0 conflicts Fatal error: Cannot redeclare merlin_post_navigation()
merlin_posted_by 0 conflicts Fatal error: Cannot redeclare merlin_posted_by()
merlin_posted_on 0 conflicts Fatal error: Cannot redeclare merlin_posted_on()
merlin_register_category_posts_boxed_widget 0 conflicts Fatal error: Cannot redeclare merlin_register_category_posts_boxed_widget()
merlin_register_category_posts_columns_widget 0 conflicts Fatal error: Cannot redeclare merlin_register_category_posts_columns_widget()
merlin_register_category_posts_grid_widget 0 conflicts Fatal error: Cannot redeclare merlin_register_category_posts_grid_widget()
merlin_related_posts 0 conflicts Fatal error: Cannot redeclare merlin_related_posts()
merlin_sanitize_checkbox 0 conflicts Fatal error: Cannot redeclare merlin_sanitize_checkbox()
merlin_sanitize_select 0 conflicts Fatal error: Cannot redeclare merlin_sanitize_select()
merlin_scripts 0 conflicts Fatal error: Cannot redeclare merlin_scripts()
merlin_setup 0 conflicts Fatal error: Cannot redeclare merlin_setup()
merlin_site_description 0 conflicts Fatal error: Cannot redeclare merlin_site_description()
merlin_site_logo 0 conflicts Fatal error: Cannot redeclare merlin_site_logo()
merlin_site_title 0 conflicts Fatal error: Cannot redeclare merlin_site_title()
merlin_slider_activated_callback 0 conflicts Fatal error: Cannot redeclare merlin_slider_activated_callback()
merlin_slider_excerpt_length 0 conflicts Fatal error: Cannot redeclare merlin_slider_excerpt_length()
merlin_slider_options 0 conflicts Fatal error: Cannot redeclare merlin_slider_options()
merlin_slider_scripts 0 conflicts Fatal error: Cannot redeclare merlin_slider_scripts()
merlin_theme_addons_image_sizes 0 conflicts Fatal error: Cannot redeclare merlin_theme_addons_image_sizes()
merlin_theme_addons_scripts 0 conflicts Fatal error: Cannot redeclare merlin_theme_addons_scripts()
merlin_theme_addons_setup 0 conflicts Fatal error: Cannot redeclare merlin_theme_addons_setup()
merlin_theme_info_menu_link 0 conflicts Fatal error: Cannot redeclare merlin_theme_info_menu_link()
merlin_theme_info_page 0 conflicts Fatal error: Cannot redeclare merlin_theme_info_page()
merlin_theme_info_page_css 0 conflicts Fatal error: Cannot redeclare merlin_theme_info_page_css()
merlin_theme_options 0 conflicts Fatal error: Cannot redeclare merlin_theme_options()
merlin_widgets_init 0 conflicts Fatal error: Cannot redeclare merlin_widgets_init()
merlin_wrapper_end 0 conflicts Fatal error: Cannot redeclare merlin_wrapper_end()
merlin_wrapper_start 0 conflicts Fatal error: Cannot redeclare merlin_wrapper_start()

Using Merlin from the command line with WP-CLI

The following commands are provided for convenience and should only be used if you understand how WP-CLI works. These commands refer to a single WordPress instance and may need to be modified if you are working with a Multisite installation.


How to install Merlin from the command line with WP-CLI

Navigate to the root of your WordPress installation and type the following command:

wp theme install merlin


How to activate Merlin from the command line with WP-CLI

To immediately activate Merlin after WP-CLI downloads the latest version you can use the following command:

wp theme install merlin --activate


How to reinstall Merlin from the command line with WP-CLI

To force a reinstallation of Merlin which overwrites the current plugin without asking for confirmation you can use the following command:

wp theme install merlin --force


How to update Merlin to the latest version from the command line with WP-CLI

wp theme update merlin


How to delete Merlin from the command line with WP-CLI

wp theme delete merlin --force

Where can you download earlier versions of Merlin?

Whenever possible you should use the latest version of plugins and themes, however if you have recently updated and discovered that you need to install an earlier version you may be able to download other versions of Merlin from the WordPress repository by visiting this link.

Please note that installing earlier versions of a theme or plugin is not generally a recommended course of action for most users and could re-introduce security, stability or other issues in Merlin

About our testing enviroment

Tests were conducted using Apache 2.4.29, PHP 7.2 on Ubuntu 18.04, MySQL 5.7.33 and WordPress 5.9

It is very possible that different versions of PHP such as PHP 8.0, PHP 7.4, or PHP 7.3 could behave differently with Merlin. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.