[Computer] Logitech IO2 Digital Pen

I received my Logitech IO2 digital pen yesterday. Today I have been trying to install it. As I expected (from reading the installation woes of others who have posted on the Logitech IO digital pen support forums at Logitech) I am having a terrible time getting the software installed. The installer gets all the files copied to disc and starts making registry entries, then fails, saying it can not access the registry.

I have been working to selectively disable Norton firewall, Norton anti-virus, and CounterSpy anti-spyware. I thought I had them all turned off, but I still cannot get the installer to modify the registry. I am going to think about it for a while longer and then call Logitech's support line to see if they can offer any suggestions. Logitech has a very well-earned reputation among IO and IO2 digital pen users for providing little to no support, so I do not hold out much hope. I may end up returning the pen if I can't get the software to install. :-(