After upgrading my Google Analytics for WordPress plugin, I started receiving the following error on all of my wordpress admin pages:

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/mywordpressdirectory.com/wp-includes/plugin.php on line 339

I understand that the plugin can be downgraded, but who wants to do that??? I just want to fix it!!! This occurred after upgrading the plugin to the 3.0 version, but the plugin did reactivate successfully after upgrading. Just error messages on every page of the admin.

Has this happened to anyone else?