The correct caveat for this case is actually a little further down under the "Problems with Scripts Running with Registry Handlers that Cache the Code" heading. In particular, "cached code won't run 'use My::Utils;' again". Similarly, "use base ..." doesn't get run again therefore base::import doesn't initialize @...::ISA again.

A solution (as mentioned) is to not do such things at compile-time. Instead use, for example:

require base;
base->import( qw< ... > );
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Of course, not having such stuff initialized at compile-time might break code structured in unfortunate ways, so test it.

Thanks tye, I actually have tried this and sadly still get the same error.

Oddly I added :

require base;
base->import(qw(Admin::Base));
use Data::Dumper;

our @ISA;

warn Dumper \@ISA;

And afer touching Test.pm I see Test.pm ISA Admin::Base:

Wed Feb 17 02:46:35 2010 Test.pm: Subroutine pre_dispatch redefined at Test.pm line 15.
Wed Feb 17 02:46:35 2010 Test.pm: Subroutine save_form redefined at Test.pm line 27.
Wed Feb 17 02:46:35 2010 Test.pm: Subroutine form redefined at Test.pm line 93.
Wed Feb 17 02:46:35 2010 Test.pm: $VAR1 = [
Wed Feb 17 02:46:35 2010 Test.pm:           'Admin::Base'
Wed Feb 17 02:46:35 2010 Test.pm:         ];

um, the problem is most likely with your code. base has some problems that parent cures, but if that doesn't help your situation, then the problem is with your code.