Looks like the module (XML::Parser) has been installed in the 5.8.0-site tree, and that directory is in @INC — which is not a problem in and of itself. Rather, the problem likely is that the dependent libexpat (C) library cannot be loaded, for example because it simply isn't installed.  So that would be the first thing to check.

P.S. anything else after the 

...0509-022 Cannot load module /u/unilocal/perl-5.8.0-site/lib/aix/aut
+o/XML/Parser/Expat/Expat.so ?...?

[download]

that would hint at why it cannot be loaded?  Often, you'll find the underlying system error there, e.g. "No such file or directory", "Permission denied", or some such.

In reply to Re: Version conflict by Anonyrnous Monk
in thread Version conflict by soubalaji

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.