Hi - I have a problem where sometimes this method will cause the script to fail with the error "Can't upgrade that kind of scalar at /usr/lib/perl5/site_perl/5.8.8/PDF/API2/Basic/PDF/Objind.pm line 150", This will always happen with the same source PDF in the same job. Basically I'm doing : 
use strict;
use PDF::API2;

my $source_pdf = $ARGV[0];
my $dest_pdf = $ARGV[1];

my $pdf_d = PDF::API2->new();
my $pdf_s = PDF::API2->open($source_pdf);

for ( my $pdf_page = 1 ;  $pdf_page <= $pdf_s->pages ; $pdf_page++ ){
  my $pdf_d_page = $pdf_d->page();
  my $pdf_d_pageform = $pdf_d->importPageIntoForm($pdf_s, $pdf_page);
  my $pdf_d_gfx = $pdf_d_page->gfx;

  $pdf_d_gfx->formimage($pdf_d_pageform, 0, 0, 1);
}

$pdf_s->end();
$pdf_d->saveas($dest_pdf);
$pdf_d->end();

[download]
except that there is a lot of other code and all of the above is in several other loops etc. There're a lot of source pdfs. The "$pdf_s->end();" will cause the error in the bad cases.

I'm afraid that I'm unable to supply the actual code or the source, problem pdfs.

While I can duplicate this 100% when it happens (perhaps with 1 in 100,000 source pdfs) with the actual script and I have isolated that the "$pdf_s->end()" is the problem line, I have not been able to replicate it in smaller test scripts using the same source pdfs yet. However I have found that if I replace the $pdf_s->end() with undef($pdf_s) everything seems to go perfectly in the production script with the problem source pdfs.

So I ask for your wisdom, Monks. Is replacing $pdf_s->end() as described a bad idea for some reason that I'm unaware of? Thanks.

In reply to PDF::API2, $pdf->end by Tharg

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