At a minimum, you're missing a dash between Firefox and >new. Let's assume that was introduced while typing into the perlmonk form. I don't have Firefox installed, so I can't help further. 

$ffpath='C:\\Program Files\\Mozilla Firefox\\firefox.exe';    
$mech = WWW::Mechanize::Firefox->new(
    tab      =>'current',
    activate =>1,
    launch   =>$ffpath
);                             
$mech->get('about:blank');

[download]

The CHANGES file for MozRepl::RemoteObject lists Firefox 7 Beta 5 as the most recent browser tested. 

    + The module is now tested with
        Firefox 3.0.9
        Firefox 3.5.x
        Firefox 4.0.1
        Firefox 5
        Firefox 6.0.1
        Firefox 7 Beta 5

In reply to Re: RemoteObject.pm fails in open firefox8.0 by spazm
in thread RemoteObject.pm fails in open firefox8.0 by seven_shen

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