Please post the question at the plugin’s dedicated sub-forum:
http://wordpress.org/support/plugin/q2w3-fixed-widget
simply don’t use that cache plugin while you are making customizations.
Otto!
Looks like you didn’t clear the cache after installing Q2W3 plugin…
Thanks a lot.
But, I have cleared my caches.
I have tried on other computers too.
It doesn’t work on any browser or any computer, except when I am logged in on my wordpress.org account.
I am really stuck on this one.