Quote Originally Posted by captainpicard View Post
Unfortunately it persists with an "Unable to map" message even after using the delete key to clear out the arrow keys as well as ijkl.

I had really hoped they would finally just 'let you map your keys how you want to' in this latest patch but it seems that its unobtainium.
The arrow keys are actually being used twice. Did you unmap them from the "window" tab AND the "targeting" tab? After I cleared them from both I was able to assign them to the camera.