You had a segfault with something easy as the folliwing code?
This just print the text inside text tags. Note that the flush will print his output and clear it while purge only clear it.

use XML::Twig;
my $t= XML::Twig->new(pretty_print => 'indented',
                    twig_handlers => {
                          'text'=>sub{  
                                       print $_[1]->text;
                                       $_[0]->purge;

                                       # or:
                                       # my $useful = $_[1]->text;
                                       # my $ret_val = some_sub_that_p
+rocess_it_further($useful);
                                       # $_[0]->purge; 

                          },
                                        
                    }
);
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HtH
L*