I just installed Piwik - really smooth!
I then followed this guide to be able to track visits without revealing my Piwik-servers URL. After that stats stopped working…
Now I have no idea where to start looking, anyone with a clue?
Hello!
Just saw this topic.
Our company developed a Piwik plugin in november last year and it’s called right as you said - HiddenTracking.
But our “HiddenTracking” plugin has nothing in common with the one you mentioned in this topic!
We don’t know what’s wrong with your analytics data but if you still want to track your website in ‘invisible’ way, we can recommend you our plugin.
It’s much simplier and we would say ‘better’ in some ways. Somedays it might be included in the piwik core, probably 
So here’s the plugin - http://dev.piwik.org/trac/ticket/2768
Read the installation instruction in our second post there (http://dev.piwik.org/trac/ticket/2768#comment:3)
If you’ll have any question or feedback, please let us know. Just post things here or write us via email: info@codax.ru