XF 1.2 1.2.5 upgrade problem

[Live Free]

FTP'd all files. Go to run install and get this:

Failed to get controller response and reroute to error handler (XenForo_Install_Controller_Upgrade::actionrun)
An exception occurred: Constant DISABLEIPDENY already defined in /home/admin/public_html/library/config.php on line 28

[LIST=1]
[*]XenForo_Application::handlePhpError()
[*]define() in config.php at line 28
[*]require() in XenForo/Application.php at line 573
[*]XenForo_Application->loadConfig() in XenForo/Application.php at line 254
[*]XenForo_Application->loadDefaultData() in XenForo/Install/Controller/Abstract.php at line 10
[*]XenForo_Install_Controller_Abstract->_preDispatchFirst() in XenForo/Controller.php at line 302
[*]XenForo_Controller->preDispatch() in XenForo/FrontController.php at line 346
[*]XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
[*]XenForo_FrontController->run() in /home/admin/public_html/install/index.php at line 18

[/LIST]

 

[Live Free]

Site's currently offline. Can't run upgrade.

 

[Steve F]

From the error it is saying something in your config.php file may be causing it. Line 28

 

[Live Free]

Looks like it involved the admincp firewall, which I disabled through the config file:

define('DISABLEIPDENY', true);

Upgrading now.

 

[zoldos]

Looks like it involved the admincp firewall, which I disabled through the config file:

define('DISABLEIPDENY', true);

Upgrading now.

Did it work? And what about plugins?