Thanks for sharing a nice plugin. My users like it :-)
I just updated to 1.1.4. Am on WP 3.4.2 + BP 1.6.1.
The subnav does not appear in the user profile. The reason is that the user role name is passed to function current_user_can in line 270
The codex advices against this http://codex.wordpress.org/Function_Reference/current_user_can.
For now, I just changed it back to a capability appropriate for the minimum role I need.