Nafitha not running

Dear Sir,
We are user of Nafith under dos 6.2 version
i tried to MOVE(CUT/PASTE) the nafitha folder one computer to other computer
BUT IT DID NOT WORK

THEN I RETURN BACK TO ORGINAL COMPUTER
STILL IT IS NOT WORKING
it gives error "SECURITY ERROR 7129-0000-0000"
copy protection not installed run option 3 in install"
PLEASE HELP ME HOW CAN I SOLVE THIS PROBLEM.

THANKS