With your updates, I see the problem. You're using the package names without the Foo:: prefix. You're probably best off Foo-izing your submodules during the load and then from there on in, you don't need to worry about it: 

package Foo;
sub new {
    my $class      = shift;
    my @submodules = map { "Foo::$_" } @_;
    for ( @submodules ) {
        eval "require $_" || die "$@";
    }
    bless { submodules => \@submodules }, $class;
}
1;

[download]
Hope that helps,

In reply to Re: Loading Modules At Run-Time With Interpolation by Tanktalus
in thread Loading Modules At Run-Time With Interpolation by Cody Pendant

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