I'm dealing with a related but dissimilar issue myself at: fastcgi broke my Exports

(Please ignore my rush to judgement conveyed in the unfortunate title. I now suspect that fastcgi had nothing to do with this, still unresolved, issue).

In my attempts to sort out my own issue, I added the following debug code to my script:

{
  $ENV{PATH} = "/bin";
  foreach my $module (keys %INC){
    my $result = `grep '^sub import' $INC{$module}`;
    if ($result){
      print STDERR "The module: $module includes: \n$result \n";
    }
    if($module =~ m/Account/){
      print STDERR "The next module is: $module \n";
      print STDERR `grep _GenerateAccountSummary $INC{$module}`;
      print STDERR "\n\n";
    }
  }
}
[download]

I've been using Data::Dumper to Dump(\@INC,\%INC,\%::,\%This::Module::,\%That::Module::), etc. Perhaps you might find these techniques helpful as well.

-- Hugh