The error message which you are encountering is a result of Perl being unable to load HTML::Parser module components via the AutoLoad mechanism - See this article from The Perl Journal for a discussion of this mechanism. This error is most likely due to a failed installation of this module. While there are no tests listed on http://testers.cpan.org for the latest version of HTML::Parser, previous versions have been installed and successfully tested on Mac OS/X Darwin.

As such, your best course of action would be re-install this module as per the module installation instructions. Make sure that you also perform the make tests installation step as this will give you an indication as to why things are failing if you are still experiencing issues with this module.

 

perl -le 'print+unpack("N",pack("B32","00000000000000000000001001010111"))'