Additional Tags 1.1.1 Error

Installed the update to Additional Tags on 4 different multisite installations with very similar configurations and each site presented the following error message.

Warning: call_user_func_array() []: First argument is expected to be a valid callback, ‘default_theme_localization’ was given in /home/content/42/7040342/html/wp-includes/plugin.php on line 395

Removing Additional Tags 1.1.1 eliminates the error message.

Phil Duncan