note SuicideJunkie <blockquote>Tk::Error: bad listbox index "": must be active, anchor, end, @x,y, or a number at /usr/intel/pkgs/perl/5.8.5/lib/site_perl/5.8.5/x86_64-linux/Tk.pm line 247</blockquote> <p>So. You're giving a listbox index that is either an empty string or perhaps <c>undef</c>. The solution is to not do that :)</p> <p>Try printing out the values you're using, and then see where the bad value is coming from.</p> <p>You could also make a temporary tweak to Tk.pm, and have it <c>confess</c> instead.</p> 969316 969316