Dear Monks,
I used PDF::Extract module to split pages of a 160 pages long PDF. (Simply following instructions from manpages, this does not gave any Error message also)

$pdf = new PDF::Extract( PDFDoc=>'C:/my.pdf' );
 $i=1;
 while ( $pdf[$i++]=$pdf->getPDFExtract( PDFPages=>$i ) );
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This module splitted the pages into separate PDF documents fine. However when the users opened these small PDF docuemnts and try saving using Acrobat 7, they are getting following message

The document's page tree contains an invalid tree
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Although this does not harm the content on PDF. It does not look good also. Can somebody tell me if PDF::Extract is Not compatible with Acrobat 7 as far as PDF splitting is concerned?
if yes then what could be the other alternative to solution this problem?