I just got the dreaded "Warning: Camera Failed." Did all the suggestions I could find online. Including clear data and cache in the camera app and force close, full wipe in recovery and reflash rom, and then complete restore to stock. Nothing worked. So, took it to the sprint store and spent 15 minutes helping the tech find evidence online that this is an actual issue. He claimed he'd never even heard of it.
Long story short....they ordered a replacement. Hopefully this is a one and done for me.