Help for Digital Countdown Proteus

I've downloaded Digital Countdown Timer, for Proteus, and when simulating it gives the following error: "Unable to open HEX file 'C:\Users\Prasad\Desktop\TIMER.hex'. ", it seems as if Prasad is the creator, and I can't load the HEX file, eventhough I have it in my desktop, can some one help me to run this simulation.

Thanks in advance,

Pecman

The path 'C:\Users\Prasad\Desktop\TIMER.hex' is wrong.

Find out where TIMER.hex is on your system.
In Proteus, EDIT the microcontroller properties.
Change the path 'C:\Users\Prasad\Desktop\TIMER.hex'
to where TIMER.hex is on your system.
That should do it.