Problem with Threshold Management

[Pdorino.it]

I've installed THold Plugin after installing Plugin Architecture.

Plugin seems work correctly but when I click on the single threshold object (into the page Management->Threshold) in order to view details of the object, my browser don't display a thing: it seems refresh the page but nothing appears...

The address into the address bar is like "http://localhost/cacti/plugins/thold/th ... ew_rrd=483", but nothing happens.

Someone can help me?