Ability for blog owners to add new user

[inkpressrealty]

I am using Wordpress 3.01 multisite . Before I added s2member plugin, users were able to add new users or subscribers to their blog, but now, add new user doesn't show up under users menu.

Wondering if I missed something...
under Super Admin --> Options, I had the following checked:
allow site administrators to add new users to their site via the "Users->Add New" page.

but it's grayed out now.

When i try to go straight to wp-admin/user-new.php (from a sub account) it just goes back to the dashboard.

please help : )

[inkpressrealty]

anybody, please???