if $hash{'setup'} && ! $old->setup # if the setup date was added
&& ! $cgi->param('setupadd_areyousure'); # and it wasn't confirmed
-rors, '_start'
+push @errors, '_start'
if $hash{'start_date'} && !$old->start_date # if a start date was added
&& $hash{'setup'}; # but there's a setup date