PDL Prima demo error

pdl> Unknown error: time to exit the event loop at /home/gtodd/perl5/lib/perl5/amd64-eebsd/PDL/Demos/Prima.pm line 177, <DATA> line 209.
 at /home/gtodd/perl5/lib/perl5/amd64-freebsd/PDL/Demos/Prima.pm line 177, <DATA> line 209.
        PDL::Demos::Prima::__ANON__() called at /home/gtodd/perl5/lib/perl5/amd64-freebsd/Prima/Utils.pm line 130
   Prima::Utils::__ANON__('Prima::Application=HASH(0x80f832a68)', 'Prima::Utils::post', 34624177088) called at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48
        eval {...} called at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48
        eval {...} called at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48
        eval {...} called at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48
        PDL::Graphics::Prima::ReadLine::__ANON__(undef) called at /usr/local/lib/perl5/5.16.2/Term/ReadLine.pm line 411
        Term::ReadLine::Tk::Tk_loop('Term::ReadLine::Perl=ARRAY(0x801824678)') called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 2084
        readline::rl_getc called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 2073
        readline::getc_with_pending() called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 1649
        readline::readline('pdl> ') called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/Perl.pm line 11
        Term::ReadLine::Perl::readline('Term::ReadLine::Perl=ARRAY(0x801824678)', 'pdl> ') called at /home/gtodd/perl5/bin/perldl line 582
        main::process_input() called at /home/gtodd/perl5/bin/perldl line 680
        eval {...} called at /home/gtodd/perl5/bin/perldl line 680
 at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48, <DATA> line 209.
        eval {...} called at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48
        eval {...} called at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48
        PDL::Graphics::Prima::ReadLine::__ANON__(undef) called at /usr/local/lib/perl5/5.16.2/Term/ReadLine.pm line 411
        Term::ReadLine::Tk::Tk_loop('Term::ReadLine::Perl=ARRAY(0x801824678)') called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 2084
        readline::rl_getc called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 2073
        readline::getc_with_pending() called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 1649
        readline::readline('pdl> ') called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/Perl.pm line 11
        Term::ReadLine::Perl::readline('Term::ReadLine::Perl=ARRAY(0x801824678)', 'pdl> ') called at /home/gtodd/perl5/bin/perldl line 582
        main::process_input() called at /home/gtodd/perl5/bin/perldl line 680
        eval {...} called at /home/gtodd/perl5/bin/perldl line 680
 at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48, <DATA> line 209.
        eval {...} called at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 48
        PDL::Graphics::Prima::ReadLine::__ANON__(undef) called at /usr/local/lib/perl5/5.16.2/Term/ReadLine.pm line 411
        Term::ReadLine::Tk::Tk_loop('Term::ReadLine::Perl=ARRAY(0x801824678)') called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 2084
        readline::rl_getc called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 2073
        readline::getc_with_pending() called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 1649
        readline::readline('pdl> ') called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/Perl.pm line 11
        Term::ReadLine::Perl::readline('Term::ReadLine::Perl=ARRAY(0x801824678)', 'pdl> ') called at /home/gtodd/perl5/bin/perldl line 582
        main::process_input() called at /home/gtodd/perl5/bin/perldl line 680
        eval {...} called at /home/gtodd/perl5/bin/perldl line 680
        ...propagated at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 50, <DATA> line 209.
 at /home/gtodd/perl5/lib/perl5/PDL/Graphics/Prima/ReadLine.pm line 50, <DATA> line 209.
        PDL::Graphics::Prima::ReadLine::__ANON__(undef) called at /usr/local/lib/perl5/5.16.2/Term/ReadLine.pm line 411
        Term::ReadLine::Tk::Tk_loop('Term::ReadLine::Perl=ARRAY(0x801824678)') called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 2084
        readline::rl_getc called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 2073
        readline::getc_with_pending() called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/readline.pm line 1649
        readline::readline('pdl> ') called at /usr/local/lib/perl5/site_perl/5.16.2/Term/ReadLine/Perl.pm line 11
        Term::ReadLine::Perl::readline('Term::ReadLine::Perl=ARRAY(0x801824678)', 'pdl> ') called at /home/gtodd/perl5/bin/perldl line 582
        main::process_input() called at /home/gtodd/perl5/bin/perldl line 680
        eval {...} called at /home/gtodd/perl5/bin/perldl line 680

 exiting...