Hi Sam,
I see clearly now. I will fix this for the next release. I had forgotten to change the logic in ProfileView.aspx when we changed from a config setting to site settings role selection.
In the mean time I believe you can work around the issue by adding this to your user.config then touch Web.config to make it reload settings.
<add key="AllowAnonymousUsersToViewMemberList" value="true" />
Best,
Joe