wpsnoop: fix Invoice King Pro plugin conflicts, errors & issues

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


Troubleshooting theme and plugin conflicts is easier when you know what Invoice King Pro 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 Invoice King Pro

Get professional support for Invoice King Pro here

When you need professional help with WordPress: get help here


What does Invoice King Pro version 1.1.7 add to WordPress? Answers Here.

This is an automatically generated report - it is possible for Invoice King Pro to perform differently in your installation, previous versions before 1.1.7 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 1.1.7 of Invoice King Pro 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 Invoice King Pro 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 Invoice King Pro add to WordPress?

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

Type & Path Size Conflicts
wp-content/plugins/invoice-king-pro/ 1.23MB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/css/ 62.71kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/css/font-awesome.min.css 21.57kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/css/invoicekingpro-styles.css 9.03kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/css/jquery-ui.css 32.11kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/fonts/ 409.94kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/fonts/fontawesome-webfont.eot 36.53kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/fonts/fontawesome-webfont.svg 193.19kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/fonts/fontawesome-webfont.ttf 77.22kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/fonts/fontawesome-webfont.woff 42.55kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/fonts/FontAwesome.otf 60.45kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/ 194.47kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/addon-attachments.jpg 13.02kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/addon-recurring.jpg 10.16kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/clean-invoice-theme.png 54.41kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/cross.png 689.00B No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/default-with-image-invoice-theme.png 49.95kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/invkp-icon_16x16_sat.png 1.43kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/invkp-icon_16x16.png 1.60kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/invkp-icon_32x32_sat.png 1.79kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/invkp-icon_32x32.png 1.40kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp_akp.jpg 9.28kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp_dkp.jpg 11.98kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp_invkp.jpg 7.03kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp_relkp.jpg 2.68kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp_rsskp.jpg 5.88kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp_smtpkp.jpg 12.61kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp-icon_16x16_sat.png 1.75kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp-icon_16x16.png 1.75kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp-icon_32x32_sat.png 2.88kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/kpp-icon_32x32.png 2.87kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/plus.png 674.00B No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/images/tick.png 688.00B No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/includes/ 137.02kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/includes/admin_area.php 73.45kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/includes/invoice_html.php 9.10kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/includes/pdf.php 8.36kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/includes/screens/ 46.11kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/includes/screens/kpp.php 4.77kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/includes/screens/settings.php 41.35kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/invoicekingpro.php 2.79kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/js/ 15.31kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/js/invoicekingpro-admin-functions.js 8.16kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/js/invoicekingpro-js.php 2.31kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/js/jquery.elastic.source.js 4.84kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/outputs/ No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/ 399.87kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/ 399.87kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/ 355.03kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/courier.php 257.00B No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/flora_bo.php 3.10kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/flora_bo.z 23.95kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/flora.php 3.31kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/flora.z 32.74kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/helvetica.php 3.09kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/helveticab.php 3.09kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/helveticabi.php 3.09kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/helveticai.php 3.09kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/helveticaneueit.php 3.34kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/helveticaneueit.z 71.06kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/helveticaneuelt.php 3.34kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/helveticaneuelt.z 83.58kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/ 99.67kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp1250.map 4.44kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp1251.map 4.66kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp1252.map 4.43kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp1253.map 4.16kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp1254.map 4.42kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp1255.map 4.20kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp1257.map 4.33kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp1258.map 4.39kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/cp874.map 4.16kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-1.map 4.50kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-11.map 4.58kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-15.map 4.47kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-16.map 4.52kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-2.map 4.46kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-4.map 4.48kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-5.map 4.61kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-7.map 4.33kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/iso-8859-9.map 4.51kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/koi8-r.map 4.63kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/koi8-u.map 4.63kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/makefont/makefont.php 10.76kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/symbol.php 3.01kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/times.php 3.08kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/timesb.php 3.09kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/timesbi.php 3.08kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/timesi.php 3.08kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/font/zapfdingbats.php 2.98kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/packages/fpdf/fpdf.php 44.84kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/readme.txt 11.63kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/themes/ 21.14kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/themes/default/ 21.14kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/themes/default/invoice_html.php 9.10kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/themes/default/pdf.php 8.86kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/themes/default/styles.css 3.17kB No known conflicts with other themes or plugins.
wp-content/plugins/invoice-king-pro/themes/default/version 3.00B No known conflicts with other themes or plugins.

Which new shortcodes does Invoice King Pro add to WordPress?

Which new database tables are created by the WordPress plugin Invoice King Pro?

Which new options are added to the wp-options table by Invoice King Pro?

Option Name   Known Conflicts
invkp_address The invkp_address option doesn't have any known conflicts with other themes or plugins.
invkp_attn_name_label The invkp_attn_name_label option doesn't have any known conflicts with other themes or plugins.
invkp_bcc The invkp_bcc option doesn't have any known conflicts with other themes or plugins.
invkp_calculate_operators The invkp_calculate_operators option doesn't have any known conflicts with other themes or plugins.
invkp_calculate_rows The invkp_calculate_rows option doesn't have any known conflicts with other themes or plugins.
invkp_calculate_subtotal The invkp_calculate_subtotal option doesn't have any known conflicts with other themes or plugins.
invkp_column_types The invkp_column_types option doesn't have any known conflicts with other themes or plugins.
invkp_column_widths The invkp_column_widths option doesn't have any known conflicts with other themes or plugins.
invkp_columns The invkp_columns option doesn't have any known conflicts with other themes or plugins.
invkp_comany_name The invkp_comany_name option doesn't have any known conflicts with other themes or plugins.
invkp_discount_label The invkp_discount_label option doesn't have any known conflicts with other themes or plugins.
invkp_email The invkp_email option doesn't have any known conflicts with other themes or plugins.
invkp_email_message The invkp_email_message option doesn't have any known conflicts with other themes or plugins.
invkp_email_subject The invkp_email_subject option doesn't have any known conflicts with other themes or plugins.
invkp_from The invkp_from option doesn't have any known conflicts with other themes or plugins.
invkp_from_email The invkp_from_email option doesn't have any known conflicts with other themes or plugins.
invkp_invoice_last_post_id The invkp_invoice_last_post_id option doesn't have any known conflicts with other themes or plugins.
invkp_invoice_no_gen The invkp_invoice_no_gen option doesn't have any known conflicts with other themes or plugins.
invkp_invoice_no_gen_incr The invkp_invoice_no_gen_incr option doesn't have any known conflicts with other themes or plugins.
invkp_invoice_no_gen_last The invkp_invoice_no_gen_last option doesn't have any known conflicts with other themes or plugins.
invkp_invoice_no_label The invkp_invoice_no_label option doesn't have any known conflicts with other themes or plugins.
invkp_invoice_type The invkp_invoice_type option doesn't have any known conflicts with other themes or plugins.
invkp_open_content_1 The invkp_open_content_1 option doesn't have any known conflicts with other themes or plugins.
invkp_open_content_2 The invkp_open_content_2 option doesn't have any known conflicts with other themes or plugins.
invkp_paid_email_message The invkp_paid_email_message option doesn't have any known conflicts with other themes or plugins.
invkp_paid_email_subject The invkp_paid_email_subject option doesn't have any known conflicts with other themes or plugins.
invkp_paid_invoice_type The invkp_paid_invoice_type option doesn't have any known conflicts with other themes or plugins.
invkp_paid_watermark The invkp_paid_watermark option doesn't have any known conflicts with other themes or plugins.
invkp_pdf_filename The invkp_pdf_filename option doesn't have any known conflicts with other themes or plugins.
invkp_phone The invkp_phone option doesn't have any known conflicts with other themes or plugins.
invkp_po_label The invkp_po_label option doesn't have any known conflicts with other themes or plugins.
invkp_postcode The invkp_postcode option doesn't have any known conflicts with other themes or plugins.
invkp_revenue_currency The invkp_revenue_currency option doesn't have any known conflicts with other themes or plugins.
invkp_safe_theme The invkp_safe_theme option doesn't have any known conflicts with other themes or plugins.
invkp_state The invkp_state option doesn't have any known conflicts with other themes or plugins.
invkp_subtotal_label The invkp_subtotal_label option doesn't have any known conflicts with other themes or plugins.
invkp_suburb The invkp_suburb option doesn't have any known conflicts with other themes or plugins.
invkp_tax_label The invkp_tax_label option doesn't have any known conflicts with other themes or plugins.
invkp_tax_value The invkp_tax_value option doesn't have any known conflicts with other themes or plugins.
invkp_theme The invkp_theme option doesn't have any known conflicts with other themes or plugins.
invkp_theme_version_ttl The invkp_theme_version_ttl option doesn't have any known conflicts with other themes or plugins.
invkp_theme_version_update_notice The invkp_theme_version_update_notice option doesn't have any known conflicts with other themes or plugins.
invkp_total_label The invkp_total_label option doesn't have any known conflicts with other themes or plugins.
invpk_db_version The invpk_db_version option doesn't have any known conflicts with other themes or plugins.

During use Invoice King Pro 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 Invoice King Pro declare when it is active?

Function   Conflicts Common Errors
find_kpp_menu_item 4 conflicts Fatal error: Cannot redeclare find_kpp_menu_item()
kpp_menu_page 4 conflicts Fatal error: Cannot redeclare kpp_menu_page()
invkp_action_row 0 conflicts Fatal error: Cannot redeclare invkp_action_row()
invkp_add_parent_page 0 conflicts Fatal error: Cannot redeclare invkp_add_parent_page()
invkp_change_meta_boxes 0 conflicts Fatal error: Cannot redeclare invkp_change_meta_boxes()
invkp_check_page 0 conflicts Fatal error: Cannot redeclare invkp_check_page()
invkp_client_columns 0 conflicts Fatal error: Cannot redeclare invkp_client_columns()
invkp_columns 0 conflicts Fatal error: Cannot redeclare invkp_columns()
invkp_create_post_type 0 conflicts Fatal error: Cannot redeclare invkp_create_post_type()
invkp_edit_client_columns 0 conflicts Fatal error: Cannot redeclare invkp_edit_client_columns()
invkp_edit_invoice_columns 0 conflicts Fatal error: Cannot redeclare invkp_edit_invoice_columns()
invkp_enqueue 0 conflicts Fatal error: Cannot redeclare invkp_enqueue()
invkp_gen_filename 0 conflicts Fatal error: Cannot redeclare invkp_gen_filename()
invkp_generate_invoice_no 0 conflicts Fatal error: Cannot redeclare invkp_generate_invoice_no()
invkp_install 0 conflicts Fatal error: Cannot redeclare invkp_install()
invkp_languages_init 0 conflicts Fatal error: Cannot redeclare invkp_languages_init()
invkp_perm 0 conflicts Fatal error: Cannot redeclare invkp_perm()
invkp_post_client 0 conflicts Fatal error: Cannot redeclare invkp_post_client()
invkp_post_client_details 0 conflicts Fatal error: Cannot redeclare invkp_post_client_details()
invkp_post_invoice 0 conflicts Fatal error: Cannot redeclare invkp_post_invoice()
invkp_post_invoice_options 0 conflicts Fatal error: Cannot redeclare invkp_post_invoice_options()
invkp_return_client_fields 0 conflicts Fatal error: Cannot redeclare invkp_return_client_fields()
invkp_return_fields 0 conflicts Fatal error: Cannot redeclare invkp_return_fields()
invkp_save_client 0 conflicts Fatal error: Cannot redeclare invkp_save_client()
invkp_save_client_custom_fields 0 conflicts Fatal error: Cannot redeclare invkp_save_client_custom_fields()
invkp_save_custom_fields 0 conflicts Fatal error: Cannot redeclare invkp_save_custom_fields()
invkp_settings_link 0 conflicts Fatal error: Cannot redeclare invkp_settings_link()
invkp_settings_output 0 conflicts Fatal error: Cannot redeclare invkp_settings_output()
invkp_theme_version_check 0 conflicts Fatal error: Cannot redeclare invkp_theme_version_check()
invkp_title_text_input 0 conflicts Fatal error: Cannot redeclare invkp_title_text_input()
invkp_update_option 0 conflicts Fatal error: Cannot redeclare invkp_update_option()
invkpcheckthemeversion_admin_action 0 conflicts Fatal error: Cannot redeclare invkpcheckthemeversion_admin_action()
invkpemailpdf_admin_action 0 conflicts Fatal error: Cannot redeclare invkpemailpdf_admin_action()
invkpmarkpaid_admin_action 0 conflicts Fatal error: Cannot redeclare invkpmarkpaid_admin_action()
invkpmarkunpaid_admin_action 0 conflicts Fatal error: Cannot redeclare invkpmarkunpaid_admin_action()
invkpviewpdf_admin_action 0 conflicts Fatal error: Cannot redeclare invkpviewpdf_admin_action()
on_update_invkp_column_widths 0 conflicts Fatal error: Cannot redeclare on_update_invkp_column_widths()
register_invkp_options 0 conflicts Fatal error: Cannot redeclare register_invkp_options()
wpt_invkp_icons 0 conflicts Fatal error: Cannot redeclare wpt_invkp_icons()

Using Invoice King Pro 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 Invoice King Pro from the command line with WP-CLI

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

wp plugin install invoice-king-pro


How to activate Invoice King Pro from the command line with WP-CLI

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

wp plugin install invoice-king-pro --activate


How to reinstall Invoice King Pro from the command line with WP-CLI

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

wp plugin install invoice-king-pro --force


How to update Invoice King Pro to the latest version from the command line with WP-CLI

wp plugin update invoice-king-pro


How to delete Invoice King Pro from the command line with WP-CLI

wp plugin delete invoice-king-pro

Where can you download earlier versions of Invoice King Pro?

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 Invoice King Pro 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 Invoice King Pro

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