Are you sure there isn't something else going on? When I use your sample content it still works: 
my $content = q|
<html>
<head>
</head>
<body>
    <DIV>Div number 12</DIV>   
    <HTML>
    <HEAD>
    </HEAD>
    <BODY>
       <p>You have an error blah blah blah</p>
    </BODY>
    </HTML>
    <DIV>Div number 13</DIV>
</body>
</html>
|;
my $tree = HTML::TreeBuilder::XPath->new;
$tree->parse_content( $content );
my @divs = $tree->findnodes( '/html/body/div' );
for my $div (@divs) {
    print $div->as_HTML . "\n";
}

[download]
Output: 
<div>Div number 12</div>
<div>Div number 13</div>

[download]

In reply to Re^3: HTML::TreeBuilder::XPath not loading the complete $page by tangent
in thread HTML::TreeBuilder::XPath not loading the complete $page by Lord Gartlar

Title:
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