I'm getting the "Whoops! Looks like you are not connected..." pop-up.
The site is a WPMS-subdomain blog.
I had Hyper Cache enabled, but clearing and disabling didn't help.
I'm using "More Privacy Options," which is a in the mu-plugins subdirectory, as I want the P2 blog private.
For that plugin and the particular blog, I have the privacy set as follows: "I would like my blog to be visible only to registered users I add to..."
The network privacy options for that blog shows "-2".
I tested that plugin at various roles, and it appears to be working fine.
I'm now wondering if my setup raises some sort of incompatibility issue.
From the blogs dashboard, I did a "QuickPress" post entitled "test" and with the single word "test" as the content. It worked, and I can view it via the P2 theme, the URL for which returned http://subdomain.domain.com/2012/01/31/test/.
Any help would be appreciated.