I’m not sure if this is a general multisite question or should be just regarding the multisite privacy plugin.
Everything was working ok – I then added another plugin “register plus redux” in order to add a couple of more fields. Then I went to network settings and made a change to Privacy Settings. I checked the box to “update all blogs” and now although I can access the network admin I cannot select ANY menu – there is a flash saying “updating …” and then takes me back to network settings page. I deleted the “register plus redux” via ftp but that did not help. I believe its connected to the “update all blogs” checkbox.