I flashed the 4.2 and rootee...boom camera didn't work. Seems it's the autofocus that jams the app.
then upgraded to Jelly bean and the camera started to work again. Perfectly.
I recently upgraded to kit kat and now the camera is back to not working again.
I tried to restore the individual camera app but it didn't work
I can't find any others who has the same issue about kit kat and I find that odd,