I've posted a sample working app of the issue I'm facing below: In summary I'm trying to pass a blessed object resulting from a call to the Net::Twitter constructor to my worker thread but keep encountering the following error:
Invalid value for shared scalar at thread_test.pl line 77.

use threads;
use threads::shared;
use Thread::Queue;
use strict;
use Wx;

my %thread_hash;
share(%thread_hash);


use Net::Twitter;

package MyApp;

use base 'Wx::App';

sub OnInit {
    my $self = shift;
       
    my $frame = MyFrame->new();

    $frame->Show(1);
    $self->SetTopWindow($frame);
    return 1;
}

package MyFrame;

use base 'Wx::Frame';
use Wx qw(wxTE_MULTILINE wxVERTICAL wxID_DEFAULT);
use Wx::Event qw(EVT_COMMAND EVT_CLOSE EVT_BUTTON);

my $done_event : shared = Wx::NewEventType;

sub new {
    my $class = shift;
    my $self = $class->SUPER::new(undef, -1, "Testing Threads");

    $self->{text} = Wx::TextCtrl->new($self, -1, "", [-1,-1], [300, 30
+0], wxTE_MULTILINE);
    $self->{button} = Wx::Button->new($self, -1, "&Run Test");
    
    my $sizer = Wx::BoxSizer->new(wxVERTICAL);
    $sizer->Add($self->{text});
    $sizer->Add($self->{button});
    $self->SetSizer($sizer);

    $self->{text}->AppendText("test\n");

    EVT_COMMAND($self, -1, $done_event, \&done);
    EVT_CLOSE($self, \&on_close);
    EVT_BUTTON($self,$self->{button}, \&on_button ); 
    
    my $sendqueue = Thread::Queue->new();
    
    my $worker = threads->create(\&worker, $self, $sendqueue );
    
    $self->{queue} = $sendqueue;
    $self->{worker} = $worker;

    InitTwit();

    $self->Fit;

    return $self;
}

sub InitTwit {

    my $user = 'twitter';
    my $pass = 'twit_password';

    my $twit = Net::Twitter->new(
          username => $user,
          password => $pass
    );

    $thread_hash{'twit'} = $twit;
    
}

sub on_button {
    my ($self, $event) = @_;
    $self->{queue}->enqueue('GO'); 
    
}

sub on_close {
    my ($self, $event) = @_;
    $self->{queue}->enqueue('STOP');
    $self->{worker}->join;
    $event->Skip(1);
}

sub done {
    my ($self, $event) = @_;

    my $text = $event->GetData;
    $self->{text}->AppendText("$text\n");
}


sub worker {

    my($self, $event) = @_;

    while (my $message = $event->dequeue ) {

        return 1 if $message eq 'STOP';

    eval {
        my $result = $thread_hash{'twit'}->update('Hello, world!');
    };
    if ( my $err = $@ ) {
          die $@ unless blessed $err && $err->isa('Net::Twitter::Error
+');

          warn "HTTP Response Code: ", $err->code, "\n",
               "HTTP Message......: ", $err->message, "\n",
               "Twitter error.....: ", $err->error, "\n";
    }


        my ($text) = "Updated posted successfuly\n";
        my $response : shared = $text;

        print "$response\n";

        my $thread_event = Wx::PlThreadEvent->new(-1, $done_event, $re
+sponse);
        Wx::PostEvent($self, $thread_event);
        
    }
} 

package main;
MyApp->new->MainLoop;
[download]

Any thoughts? I know the easiest solution is to simply call the constructor in the thread but at this point I really would like to understand why it isn't working.
Thanks again, Paul

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