I'm a little late on this one but I've installed in and after a few retry's got it to work... It's pretty cool, very slick UI with very little for you to do until once installed...
That coupled with my new HTC Home plug in with 6 buttons it allows me to show my friends and familys faces as quick dial buttons... I was thinking of showing you a screen shot, but then I thought it best and save some of them the blushes :)
You can get FoneBook from here and the HTC Plug-In from here