Support

Mandatory information about my setup:

Have I read the related troubleshooter articles above before posting (which pages?)? Yes
Have I searched the tickets before posting? Yes and searched other forums.
Have I read the documentation before posting (which pages?)? Yes mainly to do with security.
Joomla! version: 2.5
PHP version: 5.3.10
MySQL version: 5.1.63
Host: We own the server and it is a new Linux server
Admin Tools version: Admin Tools Professional 2.2.9

Description of my issue:
When I try to add a new user as anything except a Registered user I get the following error. This does not occur with another install of Joomla 2.5 on the same server without Admin tools installed.

403 - An error has occurred.

Access Denied

Return to Control Panel

Call stack
# Function Location
1 JAdministrator->initialise() /home/foremweb/public_html/administrator/index.php:34
2 JApplication->initialise() /home/foremweb/public_html/administrator/includes/application.php:81
3 JApplication->triggerEvent() /home/foremweb/public_html/libraries/joomla/application/application.php:230
4 JDispatcher->trigger() /home/foremweb/public_html/libraries/joomla/application/application.php:642
5 JEvent->update() /home/foremweb/public_html/libraries/joomla/event/dispatcher.php:161
6 call_user_func_array() /home/foremweb/public_html/libraries/joomla/event/event.php:71
7 plgSystemAdmintoolsPro->onAfterInitialise()
8 plgSystemAdmintoolsPro->noNewAdmins() /home/foremweb/public_html/plugins/system/admintools/admintools/pro.php:112
9 JError::raiseError() /home/foremweb/public_html/plugins/system/admintools/admintools/pro.php:1097
10 JError::raise() /home/foremweb/public_html/libraries/joomla/error/error.php:251

Any assistance will be greatfully appreciated.
Regards
Alan White

I found the solution here http://forum.joomla.org/viewtopic.php?p=2659127