Hi Romel.
I thing my previuse design the Vref was not correct but i remomber i check it with DC voltmetor it gives me 5 V and the IN0 determined the voltage correct but the oather going wrong, some times the software pass in errer however i repeat the design in case….
my fraiend i use Proteuse version 7.6 SP0 Pro with crack on win 7…
if you need me to upload it just tell me & i will this to y 
Good Luck
Ahmed