wpsnoop: fix FastSpring plugin conflicts, errors & issues

When the plugin FastSpring 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 FastSpring, plus learn which plugins and/or themes could be in conflict with FastSpring.


Troubleshooting theme and plugin conflicts is easier when you know what FastSpring 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 FastSpring

Get professional support for FastSpring here

When you need professional help with WordPress: get help here


What does FastSpring version 3.0.0 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for FastSpring to perform differently in your installation, previous versions before 3.0.0 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 3.0.0 of FastSpring behaves when installed and removed on a clean installation of WordPress.

We have not tested individual shortcodes, features or settings of this plugin 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 FastSpring by clicking here.

Our testing covered the free version of this plugin 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 FastSpring add to WordPress?

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

Type & Path Size Conflicts
wp-content/plugins/fastspring/ 4.12MB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/admin/ 789.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/admin/class-fastspring-admin.php 763.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/admin/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/ 596.47kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/banner-1544x500.png 254.54kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/banner-772x250.png 96.81kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/icon-128x128.png 7.09kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/icon-256x256.png 13.99kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/screenshot-1.jpg 45.62kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/screenshot-2.jpg 95.57kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/assets/screenshot-3.jpg 82.83kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/dist/ 122.99kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/dist/blocks.build.js 43.04kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/dist/blocks.editor.build.css No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/dist/blocks.style.build.css 79.93kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/dist/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/fastspring.php 326.21kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/includes/ 150.84kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/includes/class-fastspring-loader.php 1.22kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/includes/class-fastspring.php 1.54kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/includes/fastspring_init.php 32.15kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/includes/fastspringmodal.php 115.91kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/includes/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/LICENSE.txt 17.67kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/ 2.90MB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/class-fastspring-public.php 421.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/css/ 57.23kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/css/awesome.css 57.21kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/css/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/js/ 104.94kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/js/fastspring-public.js 94.50kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/js/fastspring.js 9.47kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/js/fastspringadmin.js 966.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/js/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/ 2.74MB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-brands-400.eot 129.92kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-brands-400.svg 699.11kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-brands-400.ttf 129.62kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-brands-400.woff 87.72kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-brands-400.woff2 74.82kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-regular-400.eot 33.58kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-regular-400.svg 140.94kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-regular-400.ttf 33.29kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-regular-400.woff 16.41kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-regular-400.woff2 13.27kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-solid-900.eot 198.15kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-solid-900.svg 876.39kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-solid-900.ttf 197.87kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-solid-900.woff 100.88kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/fa-solid-900.woff2 77.58kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/public/webfonts/index.php 26.00B No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/README.txt 2.84kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/tracking/ 24.91kB No known conflicts with other themes or plugins.
wp-content/plugins/fastspring/tracking/class-plugin-usage-tracker.php 24.91kB No known conflicts with other themes or plugins.

Which new shortcodes does FastSpring add to WordPress?

Which new database tables are created by the WordPress plugin FastSpring?

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

Option Name   Known Conflicts
fastspring_settings_buy_button_settings The fastspring_settings_buy_button_settings option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_checkout_button_settings The fastspring_settings_checkout_button_settings option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_cross_sell_button_settings The fastspring_settings_cross_sell_button_settings option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_eds_button_settings The fastspring_settings_eds_button_settings option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_general_settings The fastspring_settings_general_settings option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_remove_from_cart_button_settings The fastspring_settings_remove_from_cart_button_settings option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_shopping_cart_settings The fastspring_settings_shopping_cart_settings option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_translations The fastspring_settings_translations option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_up_sell_button_settings The fastspring_settings_up_sell_button_settings option doesn't have any known conflicts with other themes or plugins.
fastspring_settings_view_cart_button_settings The fastspring_settings_view_cart_button_settings option doesn't have any known conflicts with other themes or plugins.

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

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

Function   Conflicts Common Errors
wpdocs_theme_add_editor_styles 6 conflicts Fatal error: Cannot redeclare wpdocs_theme_add_editor_styles()
fastspring_about_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_about_section_callback()
fastspring_add_color_picker 0 conflicts Fatal error: Cannot redeclare fastspring_add_color_picker()
fastspring_add_id_to_script 0 conflicts Fatal error: Cannot redeclare fastspring_add_id_to_script()
fastspring_bbsettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_bbsettings_section_callback()
fastspring_buttons 0 conflicts Fatal error: Cannot redeclare fastspring_buttons()
fastspring_cart 0 conflicts Fatal error: Cannot redeclare fastspring_cart()
fastspring_cartsettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_cartsettings_section_callback()
fastspring_checkoutmenuitems 0 conflicts Fatal error: Cannot redeclare fastspring_checkoutmenuitems()
fastspring_cosettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_cosettings_section_callback()
fastspring_cssclass_render 0 conflicts Fatal error: Cannot redeclare fastspring_cssclass_render()
fastspring_csssettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_csssettings_section_callback()
fastspring_edssettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_edssettings_section_callback()
fastspring_general_options_callback 0 conflicts Fatal error: Cannot redeclare fastspring_general_options_callback()
fastspring_initialize_about 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_about()
fastspring_initialize_buy_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_buy_button_settings()
fastspring_initialize_checkout_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_checkout_button_settings()
fastspring_initialize_cross_sell_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_cross_sell_button_settings()
fastspring_initialize_custom_css 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_custom_css()
fastspring_initialize_eds_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_eds_button_settings()
fastspring_initialize_nav_menu 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_nav_menu()
fastspring_initialize_remove_from_cart_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_remove_from_cart_button_settings()
fastspring_initialize_shopping_cart_settings 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_shopping_cart_settings()
fastspring_initialize_theme_options 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_theme_options()
fastspring_initialize_translations 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_translations()
fastspring_initialize_up_sell_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_up_sell_button_settings()
fastspring_initialize_view_cart_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_initialize_view_cart_button_settings()
fastspring_nav_menu_callback 0 conflicts Fatal error: Cannot redeclare fastspring_nav_menu_callback()
fastspring_nav_menu_checkout 0 conflicts Fatal error: Cannot redeclare fastspring_nav_menu_checkout()
fastspring_nav_menu_checkout_callback 0 conflicts Fatal error: Cannot redeclare fastspring_nav_menu_checkout_callback()
fastspring_nav_menu_opencart 0 conflicts Fatal error: Cannot redeclare fastspring_nav_menu_opencart()
fastspring_rcsettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_rcsettings_section_callback()
fastspring_settings_default_about 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_about()
fastspring_settings_default_buy_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_buy_button_settings()
fastspring_settings_default_checkout_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_checkout_button_settings()
fastspring_settings_default_cross_sell_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_cross_sell_button_settings()
fastspring_settings_default_custom_css 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_custom_css()
fastspring_settings_default_eds_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_eds_button_settings()
fastspring_settings_default_general_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_general_settings()
fastspring_settings_default_nav_menu 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_nav_menu()
fastspring_settings_default_remove_from_cart_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_remove_from_cart_button_settings()
fastspring_settings_default_shopping_cart_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_shopping_cart_settings()
fastspring_settings_default_translations 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_translations()
fastspring_settings_default_up_sell_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_up_sell_button_settings()
fastspring_settings_default_view_cart_button_settings 0 conflicts Fatal error: Cannot redeclare fastspring_settings_default_view_cart_button_settings()
fastspring_settings_display 0 conflicts Fatal error: Cannot redeclare fastspring_settings_display()
fastspring_settings_menu 0 conflicts Fatal error: Cannot redeclare fastspring_settings_menu()
fastspring_start_plugin_tracking 0 conflicts Fatal error: Cannot redeclare fastspring_start_plugin_tracking()
fastspring_translationssettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_translationssettings_section_callback()
fastspring_update_tracking 0 conflicts Fatal error: Cannot redeclare fastspring_update_tracking()
fastspring_ussettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_ussettings_section_callback()
fastspring_validate_shopping_cart_settings 0 conflicts Fatal error: Cannot redeclare fastspring_validate_shopping_cart_settings()
fastspring_vcsettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_vcsettings_section_callback()
fastspring_viewcartmenuitems 0 conflicts Fatal error: Cannot redeclare fastspring_viewcartmenuitems()
fastspring_xssettings_section_callback 0 conflicts Fatal error: Cannot redeclare fastspring_xssettings_section_callback()
fsb_add_id_to_script 0 conflicts Fatal error: Cannot redeclare fsb_add_id_to_script()
fsb_add_id_to_script_admin 0 conflicts Fatal error: Cannot redeclare fsb_add_id_to_script_admin()
fsb_block_category 0 conflicts Fatal error: Cannot redeclare fsb_block_category()
fsb_buybutton_callback 0 conflicts Fatal error: Cannot redeclare fsb_buybutton_callback()
fsb_buybuttonwqty_callback 0 conflicts Fatal error: Cannot redeclare fsb_buybuttonwqty_callback()
fsb_checkout_render_callback 0 conflicts Fatal error: Cannot redeclare fsb_checkout_render_callback()
fsb_display_render_callback 0 conflicts Fatal error: Cannot redeclare fsb_display_render_callback()
fsb_full_render_callback 0 conflicts Fatal error: Cannot redeclare fsb_full_render_callback()
fsb_image_render_callback 0 conflicts Fatal error: Cannot redeclare fsb_image_render_callback()
fsb_price_render_callback 0 conflicts Fatal error: Cannot redeclare fsb_price_render_callback()
fsb_product_catalog_render_callback 0 conflicts Fatal error: Cannot redeclare fsb_product_catalog_render_callback()
fsb_summary_render_callback 0 conflicts Fatal error: Cannot redeclare fsb_summary_render_callback()
fsb_viewcart_render_callback 0 conflicts Fatal error: Cannot redeclare fsb_viewcart_render_callback()
gutenspring_fsb_block_assets 0 conflicts Fatal error: Cannot redeclare gutenspring_fsb_block_assets()
gutenspring_fsb_editor_assets 0 conflicts Fatal error: Cannot redeclare gutenspring_fsb_editor_assets()
run_fastspring 0 conflicts Fatal error: Cannot redeclare run_fastspring()

Using FastSpring 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 FastSpring from the command line with WP-CLI

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

wp plugin install fastspring


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

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

wp plugin install fastspring --activate


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

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

wp plugin install fastspring --force


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

wp plugin update fastspring


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

wp plugin delete fastspring

Where can you download earlier versions of FastSpring?

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 FastSpring 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 FastSpring

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 FastSpring. Different versions of WordPress could implement the features of this plugin in slightly different ways as well.