THE FIX IS IN!! from the home screen touch and hold on an empty spot on the screen. This will activate an option to search widgets that are pre-installed on the device. One of those is the "flashlight" widget. Drag that to one of your active screens, then try to turn on the flashlight. In my case, an notification came up that said an app called Activity Zone was using the flashlight. In the settings of that app I found that it had lowered the brightness of the light to zero; brought it back to full bright and VOILA, I had a flash that was usable on my camera again.