Default regarding status 0 error

I have cooked a rom through the kitchen,
when I try to flash it, it shows status 0 error,
Please help me!!!
any help will be highly appreciated
Rom's are angels...
and the developer their master
Hit thanks if u find my post helpful
My Devices:
Galaxy grand duos running CosmicCm v1.0 by k2wl
Secondary Device: Asus Google Nexus 7 running paranoid android 4.2 beta