User gets added w/o an access level assigned w/ WPMU membership plugin

I am using a gravity registration add on in conjunction with the WPMU Membership plugin. Everything seems to work except for the fact that when the user gets added it is not put in an access group. This is the way I am trying to get it to work: 2 access levels - Stranger and Registered. As soon as a user registers they are added at the "Membership Level" of Registered. The way it is working for me now is that the user gets added with no Membership level. You have to manually assign it. How do I change it so that when a user registers they are put in at the membership level of Registered? Is it a configuration item with the membership plugin? Does anyone have any prior experience getting these two items working in conjunction with one another? Just wondering if this is even possible to do with this combination? Or do I have to add PHP code somewhere in the gravity form?

+1 on this! the dev's at WPMU wrote a little script for this, but it doesn't really integrate in the best way. This simply redirects users to member signup page after registration. The needed/ideal solution would add a user's subscription level based on a hidden or conditional field, And/Or integrate the Membership plugin check process into the gravity form. Any Ideas?

1. Create a Gravity From and set it up for User Registration add-on (you must have version 1.4+).
2. In the Form Settings set the "Confirmation" to redirect to the appropriate membership registration page.
3. Embed the GF User Registration form in any page that is NOT a page setup in your Membership Options.
4. As noted above add the following to your theme's functions.php:
   

   add_action( 'gform_user_registered', 'pi_gravity_registration_autologin', 10, 4 );
   /**
    * Auto login after registration.
    */
   function pi_gravity_registration_autologin( $user_id, $user_config, $entry, $password ) {
   	$user = get_userdata( $user_id );
   	$user_login = $user->user_login;
   	$user_password = $password;
   
       wp_signon( array(
   		'user_login' => $user_login,
   		'user_password' =>  $user_password,
   		'remember' => false
       ) );
   }

What's happening here?
As noted, we're auto-logging in the user once they register with gravity forms. Then redirecting them to the membership page.

Since membership will see them as already being logged in they'll just be asked to select and process their subscription.

In my tests this method works and should provide what folks are looking for here. Please let us know how it works for you.

Other notes: Make sure you're username field is set to something that won't allow for spaces (this can cause problems) and that you're using the latest versions of Gravity Forms and the User Registration add-on.

Now I got it... problem was I had WP_DEBUG turned on and form_display.php was generating a Notice from line 927, "Undefined index: query". That meant that wp_signon ran into "Cannot modify header information." Turned off debug and it worked very nicely.

I realized that the logged in/logged out was a matter of the Membership plugin showing two different forms and my needing to replace them both.

So now it is strictly that the Gravity form will neither advance in the case of a multi-page form nor submit in the case of a single page form. I've moved the test URL to

http://integralbeings.com/omosha/register