Hey guys, if there's already a solution to this send me in the right direction...
I installed the Xbox Accessories app on my XBO Elite console, and all appeared well. I tried opening it, and I got an error message (I don't recall a code, if there was I didn't write it down) saying the app needed updating and it was not available right now. This just kept happening, so I tried uninstalling and reinstalling, but when I went to reinstall the download appeared not to start or do anything. I could pin the app to the dash from the store, so I did just to see what was going on, and now we reach the present:
There is a black tile (not green, as it should be) titled Xbox Accessories pinned to my Home screen which gives 3 options; Install, Show in App Store, and Cancel. Install appears to start a download, but nothing appears in the queue. Show in App Store shows the app in the store, with the option to pin/unpin to Home and nothing else. The app doesn't appear in My Apps, and I can find no option anywhere to uninstall it. I can't find the app in the app store by searching either, only by clicking the Show in Store link when I try and open the blank icon.
I've gone offline and restarted a few times, but nothing seems to boot this thing along... any thoughts appreciated, I'd like to be able to map my Elite Controller!