Hmm, I have the same problem:

Here's what I intend to try as a workaround when I upgrade to 5.10. Any suggestions for improvement welcome.

(1) At the command line, run this command:

(2) Uninstall 5.8, install 5.10 (as per the ActiveState instructions that you quote).

(3) Run the following script:

open my $fh, '<', 'C:/my_modules.txt' or die "Oops: $!\n";
while ( <$fh> ) {
  chomp;
  print "Installing $_...\n";
  system ( "ppm", "install", $_ );
}
[download]

A bit of a kludge? but better than trying to do the whole thing manually???