Upgrade of organic groups module (og-6.x-2.3) results in access denied errors

I did a fresh installation of OpenScholar (version: 2.0-beta14; flavor: Scholar Personal Sites ).

I created a new user (julie), a scholar web site (http://example.com/julie), and a page (http://example.com/julie/pages/test)

I upgraded the Organic Groups module (from the default version og-6.x.2.1) to og-6.x.2.3.
I did this, because there is a security vulnerability associated with the Organic Groups module (version < og-6.x.2.3). The advisory reads:

The module's Views integration does not filter out information from display
groups to which the current user does not have access, exposing private group
titles and the fact that the content is associated with the group.

I log in as this user, and go to the control panel (http://example.com/julie/cp/build/features). I see the error:
You are not authorized to access this page.
This same error appears for all control panel menu options (e.g. appearance, settings, content).

I log in as the 'administrative' user, and I can view the content, but if I try to edit the page (http://example.com/julie/node/2/edit), I see the error:
Access denied
You are not authorized to access this page.

This is repeatable by following the steps above. The error occurs also for version og-6.x-2.2.

I checked the 'Organic Groups' module Issues, but I cannot find an access problem related to a upgrade. Problably the closest Issue is:

Views filter "Organic groups: Groups" broken after update to 2.2 (http://drupal.org/node/1451884)