On one machine I have IE 7. When Groups page loads I get JavaScript error (attached) and Invitations button does not show. If I choose to Debug from the alert box nothing happens.
On another machine I have IE9, there the button shows but does not do anything when clicked. Same happens in Firefox, Chrome, and Safari, button shows but does not work. When I examine Firebug in Firefox I don't see any errors, just doesn't work.
Thanks