This article will guide you to uninstall or remove your JACLPlus/JACLPlus Pro/MACLPlus/MACLPlus Pro to restore your Joomla!/Mambo to original stage or to rescue your web site in case something go wrong during or after the installation, upgrading or uninstallation.

Thing may go wrong when you intend to install, upgrade or uninstall an extension in your Joomla!/Mambo. That's why backup your existing web site's files and database is extremely important whenever you intend to perform installation, uninstallation or upgrading to your existing web site. Why problem could happen? There are a lot of reasons including but not limit to file and directory permission, file read/write locking by system or database server execution error.

However, this article is not to guide you how to backup your web site. But, it will guide you to restore your Joomla!/Mambo to original stage (without JACLPlus/JACLPlus Pro/MACLPlus/MACLPlus Pro) or to rescue your web site if something go wrong during or after the installation, upgrading or uninstallation.

Step by step guide to UNINSTALL your JACLPlus Pro in Joomla! 1.5.x

If you have accidentally updated your site with Joomla update files, you can simply download and apply our update files again to fix your problem.

1) Please rename or delete jaclplus.class.php that located in administrator/components/com_jaclplus/ folder to totally disable JACLPlus. 

Step by step guide to UNINSTALL your JACLPlus/JACLPlus Pro in Joomla! 1.0.x or MACLPlus/MACLPlus Pro in Mambo 4.x

If you have accidentally updated your site with Joomla update files, you can simply download and apply our update files again to fix your problem.

Tips: If you encounter a server error after a file replacement, mostly that is because of your web server do not have permission to read/open the file. Please change the permission of that file to be readable by your web server (chmod to 0644 at least).

1) If you can't login to your Joomla!/Mambo backend after the installation or uninstallation or got error display on your web site after the uninstallation, please skip to the step 6. Or else please login to your Joomla!/Mambo backend as an Super Administrator. 

1. administrator/index.php
2. includes/authenticator.php (Mambo 4.6.x only)
3. includes/cmtclasses.php (Mambo 4.6.x only)
4. includes/core.classes.php (Mambo 4.6.x only)
5. includes/gacl.class.php
6. includes/gacl_api.class.php
7. includes/joomla.php (Joomla! only)
8. includes/mambo.php (Mambo 4.5.x only)
9. components/com_content/content.class.php (Mambo 4.6.x only)
10. components/com_content/content.html.php
11. components/com_content/content.php

3) Go to "Installers->Components" page if you are in Joomla! backend or go to "Components->Review/Uninstall" page if you are in Mambo.

4) Select your JACLPlus/JACLPlus Pro/MACLPlus/MACLPlus Pro and then click on "Uninstall" button to install it.

5) Logout yourselves and then login again to see any error occur after the uninstallation. Play around with your Joomla!/Mambo frontend and backend pages to see any error occur. If you found error, please continue to the next step or else you are DONE .

6) Okay, you have problem with your installation or uninstallation, let's manually restore some of your Joomla!/Mambo files. Please manually replace the following files with your backup files or original files from Joomla!/Mambo installation package. IMPORTANT: Please make sure the files have been replaced successfully.
Files to be manually replaced back:

1. administrator/index.php
2. includes/authenticator.php (Mambo 4.6.x only)
3. includes/cmtclasses.php (Mambo 4.6.x only)
4. includes/core.classes.php (Mambo 4.6.x only)
5. includes/gacl.class.php
6. includes/gacl_api.class.php
7. includes/joomla.php (Joomla! only)
8. includes/mambo.php (Mambo 4.5.x only)
9. components/com_content/content.class.php (Mambo 4.6.x only)
10. components/com_content/content.html.php
11. components/com_content/content.php

7) Play around with your Joomla!/Mambo frontend and backend pages to see any error occur. If you still found error, please continue to the next step or else please go to backend to uninstall the component if you haven't done it and you are DONE .

8) Okay, you still have problem after the file replacement. Now mostly the error is related to your database. Let's manually fix your database error. Please execute the following SQL queries through your phpMyAdmin and remember to replace 'jos' or 'mos' to your database table prefix value:

Run these SQL queries if your web site is Joomla!:

ALTER TABLE jos_session DROP jaclplus ;
ALTER TABLE jos_core_acl_aro_groups DROP jaclplus ;
DELETE FROM jos_groups WHERE id > 2 ;
DELETE FROM jos_core_acl_aro_groups WHERE group_id > 30 ;
UPDATE jos_categories SET access = '2' WHERE access > 2 ;
UPDATE jos_contact_details SET access = '2' WHERE access > 2 ;
UPDATE jos_content SET access = '2' WHERE access > 2 ;
UPDATE jos_mambots SET access = '2' WHERE access > 2 ;
UPDATE jos_menu SET access = '2' WHERE access > 2 ;
UPDATE jos_modules SET access = '2' WHERE access > 2 AND access != 99 ;
UPDATE jos_polls SET access = '2' WHERE access > 2 ;
UPDATE jos_sections SET access = '2' WHERE access > 2 ;
UPDATE jos_session SET gid = '1' WHERE gid > 30 ;
UPDATE jos_users SET gid = '18' WHERE gid > 30 ;
UPDATE jos_core_acl_groups_aro_map SET group_id = '18' WHERE group_id > 30 ;
DROP TABLE jos_jaclplus ;
# Below are for JACLPlus Pro only
DROP TABLE jos_jaclplus_user_group ;
ALTER TABLE jos_session DROP gids ; 

Run these SQL queries if your web site is Mambo:

ALTER TABLE mos_session DROP maclplus ;
ALTER TABLE mos_core_acl_aro_groups DROP maclplus ;
DELETE FROM mos_groups WHERE id > 2 ;
DELETE FROM mos_core_acl_aro_groups WHERE group_id > 30 ;
ALTER TABLE mos_core_acl_aro_groups AUTO_INCREMENT 31 ;
UPDATE mos_categories SET access = '2' WHERE access > 2 ;
UPDATE mos_contact_details SET access = '2' WHERE access > 2 ;
UPDATE mos_content SET access = '2' WHERE access > 2 ;
UPDATE mos_mambots SET access = '2' WHERE access > 2 ;
UPDATE mos_menu SET access = '2' WHERE access > 2 ;
UPDATE mos_modules SET access = '2' WHERE access > 2 AND access != 99 ;
UPDATE mos_polls SET access = '2' WHERE access > 2 ;
UPDATE mos_sections SET access = '2' WHERE access > 2 ;
UPDATE mos_users SET gid = '18' WHERE gid > 30 ;
UPDATE mos_core_acl_groups_aro_map SET group_id = '18' WHERE group_id > 30 ;
DROP TABLE mos_maclplus ;
# Below are for MACLPlus Pro only
DROP TABLE mos_maclplus_user_group ;
ALTER TABLE mos_session DROP gids ;

9) Play around with your Joomla!/Mambo frontend and backend pages to see any error occur. If you still found error (possible?), please contact our support personel or else please go to backend to uninstall the component if you haven't done it and you are DONE .

UPDATED 

If you still have error after follow all the above steps, you can use original core files from Joomla/Mambo to replace back all the following files to totally get rid of JACLPlus/MACLPlus modifications:

1. /administrator/index.php
2. /administrator/components/com_categories/admin.categories.php
3. /administrator/components/com_sections/admin.sections.php
   
4. /administrator/components/com_trash/admin.trash.php
   
5. /administrator/components/com_users/admin.users.php
   
6. /administrator/components/com_users/admin.users.html.php
   
7. /administrator/includes/auth.php
   
8. /administrator/modules/mod_fullmenu.php
   
9. /administrator/modules/mod_logged.php
   
10. /administrator/modules/mod_quickicon.php
    
11. /includes/authenticator.php (Mambo 4.6.x only)
12. /includes/cmtclasses.php (Mambo 4.6.x only)
13. /includes/core.classes.php (Mambo 4.6.x only)
14. /includes/mambo.php (Mambo 4.5.x only)
15. /includes/joomla.php (Joomla! only)
16. /includes/gacl.class.php
17. /includes/gacl_api.class.php
18. /includes/frontend.php
    
19. /includes/pathway.php
    
20. /includes/pdf.php
21. /modules/mod_latestnews.php
    
22. /modules/mod_mainmenu.php
    
23. /modules/mod_mostread.php
    
24. /modules/mod_newsflash.php
    
25. /modules/mod_related_items.php
    
26. /modules/mod_sections.php
    
27. /components/com_contact/contact.php
    
28. /components/com_content/content.html.php
    
29. /components/com_content/content.php
30. /components/com_content/content.class.php (Mambo 4.6.x only)
31. /components/com_newsfeeds/newsfeeds.php
    
32. /components/com_weblinks/weblinks.php
    
33. /mambots/search/categories.searchbot.php
    
34. /mambots/search/contacts.searchbot.php
    
35. /mambots/search/content.searchbot.php
    
36. /mambots/search/newsfeeds.searchbot.php
    
37. /mambots/search/sections.searchbot.php
    
38. /mambots/search/weblinks.searchbot.php