Do you have the module URI or URI::File or LWP installed?...

:) I thought of that too, op said I have installed Strawberry Perl v.5.22.0.1 on Windows 7 and therefore use so http://strawberryperl.com/release-notes/5.22.0.1-32bit.html

they are installed

XML::Twig docs warn that these parts are not well tested, heck they're not even documented

I did look at Corelist and got the impression that none of these are "core" modules. But I didn't look at what non-"core" modules Strawberry includes by default.

Looking at the code for _use():

sub _use  ## no critic (Subroutines::ProhibitNestedSubs);
    { my( $module, $version)= @_;
...
      if( eval "require $module") { ...
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Perhaps they have something loaded that is changing the return value from 'require'? It is pretty darn rare for people to care about the return value from a 'require', which is why I'd write such code as:

      if( eval "require $module; 1" ) { ...
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I'd also try "require LWP" and see what Perl says in response. It would be good to change Twig so that $@ from one of the _use() calls would be appended to the "cannot expand %dtd; - cannot load 'http://127.0.0.1:5000/parameterEntity_core.dtd'" error messages. [ People often seem to underrate the value of error messages. :) ]

- tye        

It is pretty darn rare for people to care about the return value from a 'require'

I used that quite often, as in

use Data::Dumper;
sub DEVEL() { 1 };
# get sample data
my hashref = DEVEL ? require 'sampledata.pl' : do_something_costly();

# later on
if ( DEVEL ) {
    open my $fh, 'sampledata.pl' or die "sampledata.pl: $!";
    print Dumper($hashref);
}
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Also, I use function files for autoloading (function.al) which return an anonymous sub and encapsulate private data in their lexical file scope (see also AutoReloader).

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

Hi, I use LWP in my unit tests.
Example code:

require LWP::UserAgent;

[other stuff]

#reset the counter
$ua = LWP::UserAgent->new;
$request = $ua->get($URL.'/reset');

[other stuff]
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However I also included "require LWP;" in my sample code.
I get no error messages/warnings; The code still works fine. Chris