I noticed this in the CS6 beta but assumed the beta did not have help in the download.
Selecting photoshop online help, or photoshop support center give the above error.
Since I am typing this, I am connected to the net. My Browser is the Chrome browser (stable version 18.0.1025.168)
In Bridge, nothing happens (visibly) when I select help or support from the help menu,
I have uninstalled, cleaned CS4 and CS5 droppings, and reinstalled CS6.