In Firefox Hello I was unable to successfully initiate a conversation until I disabled the "AVmedia Video Capture" program that came pre-installed on my PC as part of the Cyberlink DVD Suite. This program displayed as the default web camera instead of my Logitech web camera when I was INVITED to join a conversation. When I INITIATED a conversation (I normally run my computer as a User rather than an Administrator) there was no dialog box where I could set the camera, and thus the initiation failed (no video picture of myself).