Rear camera returning black image (front works fine)

I was running an older leaked build 10.3.2.2xxx something don't recall. I noticed my rear camera would only display black like it was being covered by something. I looked on the rear and sure enough, nothing was blocking it.

I upgraded the phone to 10.3.2.2339 and did a secure wipe. Still, my rear camera is completely black! Strangely enough, my front camera works fine.

Does anyone have a simple fix for this or is it looking like an RMA?

Check the camera with BBVE, from BlackBerry World.
If it fails in that, you may have a defective device.

Thanks for the BBVE tip. Strangely enough after downloading and installing it my camera has mysteriously started working. We'll mark this closed.

Thanks DaFoxGrey!