--- Begin Traceback ---
Died at /</khcoder/x_mac64>kh_projects.pm line 130.
kh_projects::add_new at /</khcoder/x_mac64>kh_projects.pm line 130
gui_window::project_new::_make_new at /</khcoder/x_mac64>gui_window/project_new.pm line 185
gui_window::project_new::__ANON__ at /</khcoder/x_mac64>gui_window/project_new.pm line 107
Tk callback for .toplevel.button1
Tk::__ANON__ at /</khcoder/x_mac64>Tk.pm line 251
Tk::Button::butUp at /</khcoder/x_mac64>Tk/Button.pm line 175
<ButtonRelease-1>
(command bound to event)
というエラーがでます。どうすれば良いですか?