I have installed a fresh 1.3 Fuji theme and have the following Warning in Header, above the top menu. Do you have any idea, how I can remove that? :)
Warning: call_user_func_array() [function.call-user-func-array]: First argument is expected to be a valid callback, ‘twitter_widget_script’ was given in /home/transjet/public_html/uj/wp-includes/plugin.php on line 403
The issue you are talking about is a known bug, please accept my apologies for this one. All you need to do to remove the message is download this archive from my file repository, unpack it, and upload via FTP to the following folder: wp-content/themes/Fuji/includes/twitter-widget/, replacing the existing file.
Should you have more questions or comments, do not hesitate to approach me, I’ll be glad to help!