Now I'm back to the original error! :(

Here's some data for you:

1.dat
1
10
9
8
9
6

2.dat
5
48
39
50
46
45

3.dat
4
40
39
30
36
35
[download]

Update Error has now moved to Line 61 -

  return sort { $a->{$key} <=> $b->{$key} } @$aref;
[download]

Gaaaaaaaaah! Update 2 Thanks to Mr. Muskrat and atcroft for help - Code is now the same as the above node, but with the following change:

foreach my $c( &sortby($sort, \@all_hashes) ){
  print "<tr><td>$c->{'id'}</td>\n<td>$c->{'info'}</td>\n<td>$c->{'gra
+phics'}</td>\n<td>$c->{'friendly'}</td>\n<td>$c->{'techno'}</td>\n<td
+>$c->{'entertain'}</td>\n<td>$c->{'average'}</td>\n<td>$c->{'hits'}</
+td>\n</tr>";
}
[download]

Output is OK, but the first 20 lines of the table are blank! Weird!