1. Using CYGWIN

well, running perl Makefile.PL is not enough. this just builds the Makefile needed by your system to build the whole package using make.
so after saying perl Makefile.PL, try to do the following 
make
make test
make install

[download]
in that order and see what happens.

2. Using ActivePerl

As Roger said above, you could use ActiveState's ppm (Perl Package Manager) which is imho a better choice on win32 systems (since we are not used to building stuff on windows :) )
doing just ppm install Data::Serializer is not always the best choice since there can be available multiple versions on multiple servers.
so open a dos-box (start/run/cmd) and then start ppm
use the command search to look up the version, so type ppm search Data::Serializer (or help search for assistance)

Have fun!

In reply to Re: Module Installation Trouble by esskar
in thread Module Installation Trouble by OxYgEn

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.