How are you trying to access the file in your code?

Once it is unpacked it will be in the inc dir under the directory name in $ENV{PAR_TEMP}. You can check if you are running under PAR by using $ENV{PAR_0}.

For example:

use strict;
use warnings;

my $fname = '#iDPA_SW_Template220';
my $file = $ENV{PAR_0} ? "$ENV{PAR_TEMP}/inc/$fname" : $fname;

open my $fh, $file or die "Cannot open $file";

#  do stuff with $fh
[download]

Update:

Although now I read the error properly it is an issue with the main run.

Which versions of perl, PAR and PAR::Packer are you using? And perhaps also Archive::Zip.

There are also some old reports with similar errors, one of which seems to be long fixed but which needed module updates.

https://rt.cpan.org/Public/Bug/Display.html?id=72837

https://www.nntp.perl.org/group/perl.par/2006/12/msg2759.html