Temporarily disable all your mods, and see if the issue still persists.
To disable the plugin/hook system open your config.php which can be found in your forumroot/includes directory
Just below:
Add this:
Code:
define('DISABLE_HOOKS', true);
Then save the file.
If you would like to enable the plugin/hook system again, either remove the line again or simply comment that line out. To comment it out, add two forward slashes " / " so it will look like
Code:
// define('DISABLE_HOOKS', true);
Next time you would like to disable the plugin/hook system again
you simply have to remove those two " / ".
Or since you are able to access your AdminCP go to
AdminCP -> Settings -> Options -> Plugin/Hook System
And set it to
No to disable.