The following error message kept appearing in my site's WP Dashboard. Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, 'GA_Admin::add_config_page' was given in /home/ismailfa/public_html/wp-includes/plugin.php on line 339 Code (markup): This only happened after I upgraded using the Tools function to the latest WP version. What gives?
Never mind I have solved the issue. Turns out that the Google Analytics plugin version was incompatible with the latest WP. All I had to do was upgrade that plugin.