well then menubar you are showing me tells me your cookies are not set correctly cause they are not logged in.
There are several threads here on cookies you can search on.
Basically you must check your forum cookie settings and Photopost must be set exactly. Your cookie prefix and vb
license number for vb
can be found in the config.php file of vbulletin.
You also need to put that vblicense number in the photopost config-inc.php file for login to work.