Hi Elisheva, Thanks for your replies. The code that created the file is relatively simple: 
    use Data::Dumper;
    $Data::Dumper::Purity = 1;
    print "Saving media $media->{name}\n";
    open(FILE,">$media->{name}");
    print FILE Dumper($media);
    close FILE;

[download]
If you meant the code that was used to create the %media hash itself, that's more unwieldy to analyze. It's a large structure with things dropped in it from different subfunctions, it's not so easy to isolate out just a small part. I think the second reply has nailed it though. I need to use PDL::IO::Dumper (well, I need to read it first) Thanks again for the suggestions. Will go and give that a try.

In reply to Re^2: Difficulty saving PDL's to disk with Data::dumper by Chah
in thread Difficulty saving PDL's to disk with Data::dumper by Chah

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