I am out of my league here, but i couldn't help trying to solve this problem. I came up with the following:

foreach my $node ($doc->getChildNodes()) {
   next unless $node->getNodeType == ELEMENT_NODE;
   my $child_node = $node->getFirstChild();
   my $content = $child_node->getData();

   print $content,$/;
}
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I think that the error you were getting was from the first iteration of the loop, in my case $node was an XML::DOM::DocumentType object and not an XML::DOM::Element object. Also, since you only need the first child, i believe you can use getFirstChild() instead of having to explicitly query an array index. Ughhh, i think i will take mirod's advice and avoid the DOM. ;)

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)