Sorry for resurrecting an old thread, but this is where google took me.
I've started doing a test install of HAP V9 (with the included V9.7 upgrade zip) and got as far as testing the installation. So far I've commented out the lines due to the fact I'm running Server 2012 with IIS8, and I've attached a screenshot of the system.webserver line I've had to comment out because that itself was causing issues with the page loading. Now I get this error (second screenshot attached). At first I didn't have ASP.NET installed, I've since done that and restarted the server and still got the same issue with the page loading.
Note, this is on a virtual machine on my workstation.