Conflict with Registration Role

I installed Registration Role (RR) and it was working fine. I then installed LT, and although RR initially assigns the correct role upon registration, when LT processes the confirmation email it drops the assigned role. Here is the code from Registration Role that I assume assigns the role:

/**
 * Implementation of hook_user().
 *
 * Catch every registration and insert role
 */
 
function registration_role_user ($op, &$edit, &$user, $category=null)
{
  if ($op == "insert" && $rid = variable_get('registration_role_roles', ''))
  {
    // below does not seem safe!  or necessary for insert. Commented out
    // clear first
    // db_query( 'DELETE FROM {users_roles} WHERE uid = %d', $user->uid );

    db_query('INSERT INTO {users_roles} (uid, rid) VALUES (%d, %d)', $user->uid, $rid);
  }
}

I have cross posted on the RR project, as I am not sure which maintainer should handle this. Any help would be greatly appreciated. Thanks!