Ok, I took the good image and looked at it in a hex editor... Looks like your data is truncated, because the following works for me: 
print "Content-type: image/gif\n\n";
print Image();

sub Image {
  my $image =
    '4749463839610f001000a2ff00848684' .
    'dfe0dfc6c7c6c0c0c000000000000000' .
    '000000000021f90401000003002c0000' .
    '00000f00100040034048baacf3608049' .
    'a98824ca0aae78d9b375a4164a92470e' .
    '016a8dde10721c48dfc029ee528b0ac0' .
    'e06717121a8132cd6729b4ed8cc4c891' .
    '97a45a09b286569100003b00';

  return(pack("H*",$image));
}

[download]
So the problem must lie in the unpack code.

In reply to Re: More on hex pack/unpack by httptech
in thread More on hex pack/unpack by BBQ

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