The problem with those new devices is that they lack of hardkeys. The HD2, Touch HD, HD Mini and Touch Pro 2 lack of a camera button. Why use the touchscreen when you may use your volume keys to take a photo and zoom in/out .
Devices that are proven to be working:
-HTC HD2 aka. HTC Leo
-HTC Touch HD aka. HTC Blackstone
-HTC Touch Pro 2
-HTC HD Mini
-HTC Touch Diamond 2
Just install, close any open HTC Camera windows and run it over one of my icons. If you are able to change to volume, update your HTC Camera.
Following versions should work: