Unhappy [Q] Question About "Zero Camera Mod force closing"

I am a LG-D821 user from korea
I tried http://forum.xda-developers.com/show....php?t=2563476 < this mod.
I Flashed it on TWRP might be correct)
Then I rebooted my nexus 5.
I opened camera.
it works properly.............not.
I touched blue button to take test picture. then the application stopped.(not closing)
then I re-opened the camera application
It shows me "cannnot connect to camera"
so I flashed stock camera. It works very well

I am using mahdi-rom-20131219.
What can I do?