Hello, 

I am trying to create a new group for portal users but Odoo only recognizes it if the user is Internal user, if the user is portal he cannot have my new group.

My group is created like this:

<record id="group_entity_member" model="res.groups">
<field name="name">Entity Member</field>
 <field name="comment">The user will have the rights of a entity member</field>
 <field name="users" eval="[(4, ref('base.user_root'))]"/>
 </record>​