Clicking on User account crashes when User account tabs submodule is activated

Hello dear developers,
My configuration is Ubuntu server 11.04, Drupal 7,7, with Postgresql databse, with modules set as in attached file (installedmodules.txt)
Steps to reproduce the bug:
1) Deactivate the sub-module "User account tabs"
2) Click on "My Account" link
3) The user account interface is displayed without mistake.
4) Activate the sub-module "User account tabs"
5) 2) Click on "My Account" link
6) Error message:

"PDOException: SQLSTATE[22P02]: Invalid text representation: 7 ERROR: invalid input syntax for integer: "" LINE 4: WHERE (base.sid IN ('')) ^: SELECT base.sid AS sid, base.uid AS uid, base.mdid AS mdid, base.type AS type, base.event_type AS event_type, base.conditions AS conditions, base.send_interval AS send_interval, base.language AS language, base.send_method AS send_method, base.cron AS cron, base.module AS module, base.status AS status, base.destination AS destination, base.created AS created, base.updated AS updated FROM {notifications_subscription} base WHERE (base.sid IN (:db_condition_placeholder_0)) ; Array ( [:db_condition_placeholder_0] => ) in DrupalDefaultEntityController->load() (line 196 of /var/www/tax/includes/entity.inc)."

Looks like if it is related to compatibiloity with postgreql.
Please advise.

Best regards,

Vincent Lalieu
Almaty - Kazakhstan