I tried to use both the short code and the PHP snippet, and with both I ended up with "Now viewing 0 through 0 of 0 People found."
http://screencast.com/t/aBQZNEFiGC
I've disabled plug-ins / reverted to twenty-eleven theme, I tested this on a fresh install of WordPress, and this issue still occurs.
I've even checked the edit members and they are all setup as visible.
Maybe some bug shows up with the latest WP version and the latest version of your plug-in ?
Let me know if I can help you with debugging this.