I enabled friendly URLs in search engine optimizations and now I'm getting a configuration error in systems tab. Everything else is fine but I cannot access any category or sub-category in systems because of it. I'm unable to revert it as well.

Logs

<?php exit; ?>

Sun, 18 Oct 2015 01:45:10 +0000 (Severity: 2)
---- - https://----/admin/?adsess=2614ba3df5a1de2abc68fc935058f9c0&app=core&module=overview&controller=dashboard
OutOfRangeException
0: 
#0 /home/----/public_html/init.php(432) : eval()'d code(21): IPS\Http\_Url->getFriendlyUrlData()
#1 /home/----/public_html/applications/core/extensions/core/Dashboard/AdminNotes.php(46): IPS\Helpers\hook10->values()
#2 /home/----/public_html/applications/core/modules/admin/overview/dashboard.php(58): IPS\core\extensions\core\Dashboard\_AdminNotes->getBlock()
#3 /home/----/public_html/system/Dispatcher/Controller.php(94): IPS\core\modules\admin\overview\_dashboard->manage()
#4 /home/----/public_html/system/Dispatcher/Dispatcher.php(129): IPS\Dispatcher\_Controller->execute()
#5 /home/----/public_html/admin/index.php(13): IPS\_Dispatcher->run()
#6 {main}
------------------------------------------------------------------------

 

-- UPDATE --

 

Now it's not even letting me login as admin. It says I'm logged in as guest and does not allow me to logout.

--UPDATE--

I changed the value to use friendly_urls back to 0 in config and removed the string from htaccess, though, the error still persists.

Please submit a ticket.

I have same problem