Maybe you can help us out further by posting the version number of WWW::Mechanize::Shell and WWW::Mechanize, and maybe the relevant part of the session in the console window.

You find the WWW::Mechanize::Shell version number via:

perl -MWWW::Mechanize::Shell -e "die $WWW::Mechanize::Shell::VERSION"
perl -MWWW::Mechanize -e "die $WWW::Mechanize::VERSION"
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Ok, here the relevant part of the command line...

C:\>perl -MWWW::Mechanize::Shell -e "die $WWW::Mechanize::Shell::VERSI
+ON"
Died at -e line 1.

C:\>perl -MWWW::Mechanize -e "die $WWW::Mechanize::VERSION"
0.72 at -e line 1.

C:\>perl -MWWW::Mechanize::Shell -eshell

C:\>
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Your installation of WWW::Mechanize::Shell is broken then.

On my machine, it outputs the following:

C:\>perl -MWWW::Mechanize::Shell -e "die $WWW::Mechanize::Shell::VERSI
+ON"
0.36 at -e line 1.
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I can't help you any further except that you should maybe use CPAN.pm to install WWW::Mechanize::Shell instead of trying via ppm:

perl -MCPAN -e "install WWW::Mechanize::Shell"
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That requires you to have a working nmake.exe installed though, which can be had from Microsoft.