OK, I verified the following:
Cookie Path same as vB3
Cookie Domain same as vB3
Usergroups have all fields/cols set to 1.
My user name has usergroup set to 6 same as in vB3 user table.
If set to use vB3 user table for membership management, when in PhotoPost, it shows accurate number of users from vB3 db. BUT it shows me as logged in annonomously.
If I click to log in through PhotoPost, it accepts my loggin but still does not show me as a logged in user or the ability to administer PhotoPost.
If the answer isn't easy/convenient to type out I would really appreciate the opportunity to call via telephone to get over this hurdle. If so, please PM me with a number to call.